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 Troubleshooting  

Dell™ XPS™ 720 Owner's Manual

 

 

 

Solving Problems  

Follow these tips when you troubleshoot your computer: 

l

 

If you added or removed a part before the problem started, review the installation procedures and ensure that the part is correctly installed. 

 

l

 

If a peripheral device does not work, ensure that the device is properly connected. 

 

l

 

If an error message appears on the screen, write down the exact message. This message may help support personnel diagnose and fix the problem(s). 

 

l

 

If an error message occurs in a program, see the program's documentation. 

 

 

 

Battery Problems 

 

 

 

 

 

 

Replace the battery 

—

 

 

If you have to repeatedly reset time and date information after turning on the computer, or if an incorrect time or date displays during start-up, replace the 
battery (see 

Replacing the Battery

). If the battery still does not work properly, contact Dell (see 

Contacting Dell

). 

 

 

Drive Problems 

 

 

 

 

Ensure that Microsoft

® 

Windows

®

 Recognizes the drive 

—

 

 

Windows XP

: 

l

 

Click 

Start and click My Computer

. 

Windows Vista™

: 

l

 

Click the Windows Vista Start button 

 and click 

Computer

. 

If the drive is not listed, perform a full scan with your antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from 
recognizing the drive. 

 

 

Test the drive 

—

 

 

l

 

Insert another disc to eliminate the possibility that the original drive is defective. 

l

 

Insert a bootable floppy disk and restart the computer. 

 

 

Clean the drive or disk 

—

 

 

See 

Cleaning Your Computer

. 

 

 

Check the cable connections

 

 

  

  

Solving Problems 

 

  

Power Lights 

 

  

Diagnostic Lights 

 

  

Beep Codes 

 

  

System Messages 

 

  

Dell Diagnostics 

 

  

Drivers 

 

  

Restoring Your Operating System 

 

 

NOTE: 

The procedures in this document were written for the Windows default view, so they may not apply if you set your Dell™ computer to the 

Windows Classic view.

 

CAUTION: 

There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type 

recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

 

CAUTION: 

Before you begin any of the procedures in this section, follow the safety instructions in the 

Product Information Guide

.

 

CAUTION: 

Before you begin any of the procedures in this section, follow the safety instructions in the 

Product Information Guide

.

Summary of Contents for XPS 720 H2C

Page 1: ...tton are either trademarks or registered trademarks of Microsoft Corporation in the United States and or other countries Bluetooth is a registered trademark owned by Bluetooth SIG Inc and is used by Dell under license Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell Inc disclaims any proprietary intere...

Page 2: ... Type 800 and 667 MHz DDR2 unbuffered SDRAM SLI memory Memory connectors four Memory capacities 512 MB 1 GB or 2 GB non ECC Minimum memory 1 GB Maximum memory 8 GB NOTE See Addressing Memory Configurations to verify the amount of memory available to the operating system Computer Information Chipset Northbridge Southbridge NVIDIA nForce 680i SLI C55XE MCP55PXE DMA channels five Interrupt levels 24 ...

Page 3: ... Serial ATA drive floppy drive memory devices Blu ray Disc drive DVD drive DVD RW drive CD RW DVD combo drive and media card reader Externally accessible two 3 5 inch drive bays four 5 25 inch drive bays Internally accessible four 3 5 inch drive bays for hard drives Connectors External connectors IEEE 1394 front and back panel 6 pin serial connectors Network adapter RJ45 connector PS 2 keyboard an...

Page 4: ...t of the computer NOTE The color of the front panel LEDs can be adjusted in system setup see System Setup Back panel LEDs two multi colored lights provide illumination for the I O panel on the back of the computer NOTE The color of the back panel LEDs can be adjusted in system setup see System Setup Power DC power supply CAUTION To reduce the risk of fire electric shock or injury do not overload a...

Page 5: ...ec 508 cm sec Altitude Operating 15 2 to 3048 m 50 to 10 000 ft Storage 15 2 to 10 668 m 50 to 35 000 ft NOTICE Do not change the settings in system setup unless you are an expert computer user Certain changes can cause your computer to work incorrectly NOTE Keyboard failure may result when a key on the keyboard is held down for extended periods of time To avoid possible keyboard failure press and...

Page 6: ...d to the DSKT connector on the system board and sets read permissions for the drive l Off All floppy drives are disabled l USB USB floppy drives are enabled l Internal The integrated floppy drive is enabled l Read Only The integrated floppy drive is enabled with read only access NOTE Operating systems with USB support will recognize USB floppy drives regardless of this setting SATA Drives 0 throug...

Page 7: ... upper front panel LEDs see Front and Back View of the Computer Front Lower LED Adjusts the color of the lower front panel LEDs see Front and Back View of the Computer Rear Panel LED Adjusts the color of the rear panel LEDs see Front and Back View of the Computer LED Intensity Adjusts the intensity for the color of the upper and lower front panel LEDs and the rear panel LEDs Performance Multiple C...

Page 8: ... drives l Quiet The hard drive operates at a slower but quieter speed l Suggested Allow the hard drive manufacturer to select the mode l Performance The hard drive operates at a faster but possibly noisier speed NOTE Switching to performance mode may cause an increase in noise produced by the drive but does not affect the drive s performance NOTE Changing the acoustics setting does not alter your ...

Page 9: ...mputer using a power strip or surge protector Low Power Mode Off default Specifies how aggressive the system is at conserving power while in hibernate mode or turned off l Off Add more functionality l On Conserve more power Suspend Mode S3 default Specifies the power management suspend mode l S1 The computer resumes more quickly from sleep mode l S3 The computer conserves more power when not in us...

Page 10: ...iately If you wait too long and the operating system logo appears continue to wait until you see the Microsoft Windows desktop then shut down your computer and try again 4 At the Boot Device Menu use the up and down arrow keys or press the appropriate number on the keyboard to highlight the device that is to be used Fastboot On default Enables or disables the option to speed up the boot process by...

Page 11: ...hen connect your computer and monitor to electrical outlets and turn them on 6 After the Microsoft Windows desktop appears on your computer turn the computer off a Save and close all open files and exit all open programs b Shut down the operating system In Windows XP click Start Turn Off Computer Turn off In Windows Vista click Start click the arrow in the lower right corner of the Start menu as s...

Page 12: ...een the keys on the keyboard l To clean your monitor screen lightly dampen a soft clean cloth with water If possible use a special screen cleaning tissue or solution suitable for the monitor s antistatic coating NOTICE The password jumper plug must be reinstalled on the password jumper pins in order to enable the password feature NOTICE To connect a network cable first plug the cable into the netw...

Page 13: ... DVDs FCC Notices U S Only Most Dell computer systems are classified by the Federal Communications Commission FCC as Class B digital devices To determine which classification applies to your computer system examine all FCC registration labels located on the bottom side or back panel of your computer on card mounting brackets and on the cards themselves If any one of the labels carries a Class A ra...

Page 14: ...s l Product name Dell XPS 720 l Model number DCDO Company name Dell Inc One Dell Way Round Rock Texas 78682 USA 512 338 4400 Contacting Dell You can contact Dell through the Internet and by phone l For support through the web go to support dell com l For worldwide support through the web use the Choose A Country Region menu near the bottom of the page or see the web addresses listed in the followi...

Page 15: ... Home Small Business Customer Service 08 20 24 05 30 14 Home Small Business Support 08 20 24 05 30 17 Preferred Accounts Corporate Customer Service 08 20 24 05 30 16 Preferred Accounts Corporate Support 08 20 24 05 30 17 Switchboard 08 20 24 05 30 00 Bahamas Online Support www dell com bs la techsupport dell com Technical Support Customer Service Sales toll free 1 866 874 3038 Barbados Online Supp...

Page 16: ...e 592 Online Support support dell com cn Technical Support E mail support dell com cn email Customer Service E mail customer_cn dell com Technical Support Fax 592 818 1350 Technical Support XPS computers only toll free 800 858 0540 Technical Support Dell Dimension and Dell Inspiron toll free 800 858 2969 Technical Support Dell OptiPlex Dell Latitude and Dell Precision toll free 800 858 0950 Techni...

Page 17: ...ical Support Customer Service Sales calling from Quito toll free 999 119 877 655 3355 Technical Support Customer Service Sales calling from Guayaquil toll free 1800 999 119 877 655 3355 El Salvador Online Support www dell com sv la techsupport dell com Technical Support Customer Service Sales 800 6132 Finland Helsinki International Access Code 990 Country Code 358 City Code 9 Online Support suppor...

Page 18: ...ll com support dell com cn email Technical Support XPS computers only 00852 3416 6923 Technical Support Dimension and Inspiron 00852 2969 3188 Technical Support OptiPlex Latitude and Dell Precision 00852 2969 3191 Technical Support Servers and Storage 00852 2969 3196 Technical Support Projectors PDAs Switches Routers etc 00852 3416 0906 Customer Service 00852 3416 0910 Large Corporate Accounts 008...

Page 19: ...ustomer Service 02 577 825 55 Fax 02 575 035 30 Switchboard 02 577 821 Jamaica Online Support la techsupport dell com Technical Support Customer Service Sales dial from within Jamaica only 1 800 440 9205 Japan Kawasaki International Access Code 001 Country Code 81 City Code 44 Online Support support jp dell com Technical Support XPS computers only toll free 0120 937 786 Technical Support outside o...

Page 20: ...cess Code 00 Country Code 60 City Code 4 Online Support support ap dell com Technical Support XPS computers only toll free 1 800 885 784 Technical Support Dell Precision OptiPlex and Latitude toll free 1 800 880 193 Technical Support Dimension Inspiron and Electronics and Accessories toll free 1 800 881 306 Technical Support PowerApp PowerEdge PowerConnect and PowerVault toll free 1800 881 386 Cus...

Page 21: ...ort Customer Service Sales 0800 50 669 Poland Warsaw International Access Code 011 Country Code 48 City Code 22 Online Support support euro dell com pl_support_tech dell com Customer Service Phone 57 95 700 Customer Service 57 95 999 Sales 57 95 999 Customer Service Fax 57 95 806 Reception Desk Fax 57 95 998 Switchboard 57 95 999 Portugal International Access Code 00 Country Code 351 Online Suppor...

Page 22: ...Technical Support Customer Service and Sales Penang Malaysia 604 633 4810 Spain Madrid International Access Code 00 Country Code 34 City Code 91 Online Support support euro dell com Home and Small Business Technical Support 902 100 130 Customer Service 902 118 540 Sales 902 118 541 Switchboard 902 118 541 Fax 902 118 539 Corporate Technical Support 902 100 130 Customer Service 902 115 236 Switchbo...

Page 23: ...e Support support euro dell com dell_direct_support dell com Customer Service Online support euro dell com uk en ECare form home asp Sales Home and Small Business Sales 0870 907 4000 Corporate Public Sector Sales 01344 860 456 Customer Service Home and Small Business 0870 906 0010 Corporate 01344 373 185 Preferred Accounts 500 5000 employees 0870 906 0010 Global Accounts 01344 373 186 Central Gove...

Page 24: ...1 800 274 1550 K 12 Education toll free 1 888 977 3355 Higher Education toll free 1 800 274 7799 Employee Purchase Program EPP toll free 1 800 695 8133 Financial Services www dellfinancialservices com Leases and Loans toll free 1 877 577 3355 Dell Preferred Accounts DPA toll free 1 800 283 2210 Sales 1 800 289 3355 or 1 800 879 3355 Dell Outlet Store toll free 1 888 798 7561 Software and Periphera...

Page 25: ...vers see Reinstalling Drivers and Utilities access your documentation or run the Dell Diagnostics see Dell Diagnostics Readme files may also be included on your media to provide last minute updates about technical changes to your computer or advanced technical reference material for technicians and experienced users NOTE Drivers and documentation updates can be found at support dell com l Warranty...

Page 26: ...peration of your Dell computer Dell Support Website support dell com NOTE Select your region or business segment to view the appropriate support site To download Desktop System Software 1 Go to support dell com select your business segment and then enter your Service Tag or product model 2 Select Drivers Downloads and then click Go 3 Select your operating system and language and then search for th...

Page 27: ...t these settings have on the computer do not change them Also referred to as system setup bit The smallest unit of data interpreted by your computer Blu ray Disc BD An optical storage technology offering storage capacity of up to 50 GB full 1080p video resolution HDTV required and as many as 7 1 channels of native uncompressed surround sound Bluetooth wireless technology A wireless technology stan...

Page 28: ...nique for spreading data over multiple disk drives Disk striping can speed up operations that retrieve data from disk storage Computers that use disk striping generally allow the user to select the data unit size or stripe width DMA direct memory access A channel that allows certain types of data transfer between RAM and a device to bypass the processor docking device See APR DMTF Distributed Mana...

Page 29: ...uthenticate your user identity to help secure your computer folder A term used to describe space on a disk or drive where files are organized and grouped Files in a folder can be viewed and ordered in various ways such as alphabetically by date and by size format The process that prepares a drive or disk for file storage When a drive or disk is formatted the existing information on it is lost FSB ...

Page 30: ... unit of data that equals 1024 bytes but is often referred to as 1000 bytes key combination A command requiring you to press multiple keys at the same time kHz kilohertz A measurement of frequency that equals 1000 Hz L LAN local area network A computer network covering a small area A LAN usually is confined to a building or a few nearby buildings A LAN can be connected to another LAN over any dist...

Page 31: ... parallel connector An I O port often used to connect a parallel printer to your computer Also referred to as an LPT port partition A physical storage area on a hard drive that is assigned to one or more logical storage areas known as logical drives Each partition can contain multiple logical drives PC Card A removable I O card adhering to the PCMCIA standard Modems and network adapters are common...

Page 32: ...nd scanners The SCSI can connect many devices using a single controller Each device is accessed by an individual identification number on the SCSI controller bus SDRAM synchronous dynamic random access memory A type of DRAM that is synchronized with the optimal clock speed of the processor serial connector An I O port often used to connect devices such as a handheld digital device or digital camer...

Page 33: ... 4 pin socket on your computer or in to a multi port hub that plugs in to your computer USB devices can be connected and disconnected while the computer is turned on and they can also be daisy chained together UTP unshielded twisted pair Describes a type of cable used in most telephone networks and some computer networks Pairs of unshielded wires are twisted to protect against electromagnetic inte...

Page 34: ...N WXGA wide aspect extended graphics array A video standard for video cards and controllers that supports resolutions up to 1280 x 800 X XGA extended graphics array A video standard for video cards and controllers that supports resolutions up to 1024 x 768 Z ZIF zero insertion force A type of socket or connector that allows a computer chip to be installed or removed with no stress applied to eithe...

Page 35: ...tempting to lift move or tilt the computer and always lift correctly to avoid injury avoid bending over while lifting CAUTION The liquid cooling assembly is not user serviceable or upgradeable All required service should be done by qualified service personnel only The liquid cooling assembly in your system contains a non refillable coolant In the event of a coolant leak shut down your system immed...

Page 36: ...lease latch pulled back grip the sides of the cover then pivot the top of the cover up and away from the computer 4 Slide the cover forward and up to remove it from the hinge slots then set it aside in a secure and protected location Inside View of Your Computer NOTICE When disconnecting a network cable first unplug the cable from your computer and then unplug it from the network port or device CA...

Page 37: ...NEL 6 back LED connector 7 power button PWR_BT 8 FlexBay connector INT_USB 9 main power connector POWER1 10 SATA connectors SATA0 5 11 front USB connector FRNT_USB 12 front panel 1394 connector FP1394 13 PCI Express x1 card slot SLOT1 This slot is not available in the dual graphics configuration 14 PCI Express x16 card slot SLOT2 15 PCI card slot SLOT3 This slot is not available in the dual graphi...

Page 38: ...installed l Be sure to install a single memory module in DIMM connector 1 the connector closest to the processor before you install modules in any other connector slot SLOT4 19 PCI Express x16 card slot SLOT7 20 RTC reset jumper RTCRST 21 battery socket BATTERY 22 password jumper PASSWORD 23 power connector POWER2 24 floppy drive DSKT 25 card cage fan connector FAN_CAGE 26 liquid cooling assembly ...

Page 39: ...e module snaps into position If you insert the module correctly the securing clips snap into the cutouts at each end of the module connectors 3 and 4 NOTE Memory purchased from Dell is covered under your computer warranty CAUTION Before you begin any of the procedures in this section follow the safety instructions in the Product Information Guide NOTICE To avoid electrostatic discharge and damage ...

Page 40: ...for PCI and PCI Express cards l Three PCI card slots l Two PCI Express x16 card slots can be used in a dual graphics configuration l One PCI Express x16 card slot wired as x8 l One PCI Express x1 card slot NOTICE To connect a network cable first plug the cable into the network port or device and then plug it into the computer CAUTION Before you begin any of the procedures in this section follow th...

Page 41: ...d NOTICE To avoid electrostatic discharge and damage to internal components ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface on the computer chassis NOTICE If your computer came with a PCI graphics card installed removal of the card is not necessary when installing additional graphics cards however the card is required for troubleshooting purp...

Page 42: ...the securing slot NOTICE Before rotating the card retainer back into place ensure that the tops of all cards and filler brackets are flush with the alignment bar and the notch in the top of each card or filler bracket fits around the alignment guide NOTICE Do not route card cables over or behind the cards Cables routed over the cards can prevent the computer cover from closing properly or cause da...

Page 43: ...s not installed correctly you may damage the system board 1 card connector seated 2 card connector not seated 3 bracket properly aligned within slot 4 bracket improperly aligned outside of slot 5 alignment bar 6 alignment guide NOTICE Do not route card cables over or behind the cards Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment ...

Page 44: ...mputer Set it aside 5 Disconnect any cables connected to the card 6 Press down the tab on the top of the card retainer at the appropriate card slot and pivot the card retainer back through the chassis wall 7 Press the release tab if present on the system board connector as you grasp the card by its top corners and then ease the card out of the connector 1 graphics card bridge 2 power connectors 2 ...

Page 45: ... Begin 2 Remove the computer cover see Removing the Computer Cover 3 If present press the tab on the card retention device that lays over the installed cards and rotate it upwards to gain full access to the card 4 Press down the tab on the top of the card retainer at the appropriate card slot and pivot the card retainer back through the chassis wall 1 PCI Express x16 card 2 securing tab 3 PCI Expr...

Page 46: ...al graphics configuration pressing firmly so that it completely covers the connector tabs 1 release tab 2 card retainer 3 alignment guide 4 fan bracket NOTE If you are upgrading to a dual graphics card configuration and have a card installed in the PCI Express x1 card slot remove the card see Removing PCI and PCI Express Cards NOTE If the card is full length insert the card guide into the alignmen...

Page 47: ...ble the integrated network adapter 1 Enter system setup see Entering System Setup select Integrated NIC Controller and then change the setting to Off 2 Connect the network cable to the add in network adapter connectors Do not connect the network cable to the integrated connector on the back panel If you removed an add in network connector 1 Enter system setup see Entering System Setup select Integ...

Page 48: ...ecting a SATA cable hold the cable by the connector at each end and press firmly into the connector When disconnecting a SATA cable hold the cable by the connector at each end and pull until the connector detaches When you connect two IDE devices to a single IDE data cable and configure the devices for the cable select setting the device attached to the last connector on the data cable is primary ...

Page 49: ...ct the computer and devices to electrical outlets and turn them on CAUTION Before you begin any of the procedures in this section follow the safety instructions in the Product Information Guide CAUTION To guard against electrical shock always unplug your computer from the electrical outlet before removing the cover NOTICE If you are replacing a hard drive that contains data that you want to keep b...

Page 50: ...icks securely into place 7 Connect the power cable to the hard drive 8 Connect the hard drive data cable to the hard drive CAUTION Before you begin any of the procedures in this section follow the safety instructions in the Product Information Guide NOTE If a hard drive bracket is installed inside of the hard drive bay remove the bracket before you install the new hard drive NOTE If hard drive you...

Page 51: ...computer cover see Removing the Computer Cover 3 Grasp the drive release latch and slide it towards the base of the computer until the drive panel snaps open 4 Pivot the drive panel outward and lift it from its side hinges 1 power cable 2 data cable NOTICE To connect a network cable first plug the cable into the network port or device and then plug it into the computer CAUTION Before you begin any...

Page 52: ...er Cover See the documentation that came with the drive for instructions on installing any software required for drive operation Floppy Drive Removing a Floppy Drive 1 Follow the procedures in Before You Begin 2 Remove the computer cover see Removing the Computer Cover 3 Remove the drive panel see Removing the Drive Panel 4 Disconnect the power and data cables from the back of the floppy drive 1 d...

Page 53: ...o electrical outlets and turn them on Installing a Floppy Drive 1 Follow the procedures in Before You Begin 2 Remove the computer cover see Removing the Computer Cover 3 Remove the drive panel see Removing the Drive Panel 4 Remove the existing floppy drive if applicable see Removing a Floppy Drive 1 power cable 2 floppy drive data cable 1 drive release latch 2 floppy drive NOTICE To connect a netw...

Page 54: ...e Computer Cover 11 Connect your computer and devices to their electrical outlets and turn them on See the documentation that came with the drive for instructions on installing any software required for drive operation 12 Enter system setup see Entering System Setup and select the appropriate Diskette Drive option Media Card Reader Removing a Media Card Reader 1 Follow the procedures in Before You...

Page 55: ...6 Replace the drive panel see Replacing the Drive Panel 7 Replace the computer cover see Replacing the Computer Cover 8 Connect the computer and devices to electrical outlets and turn them on Installing a Media Card Reader 1 Follow the procedures in Before You Begin 2 Remove the computer cover see Removing the Computer Cover 1 media card reader power cable 2 system board connector 1 drive release ...

Page 56: ...ng vents 9 Replace the drive panel see Replacing the Drive Panel 10 Replace the computer cover see Replacing the Computer Cover 11 Connect your computer and devices to their electrical outlets and turn them on See the documentation that came with the drive for instructions on installing any software required for drive operation 12 Enter system setup see Entering System Setup and select the appropr...

Page 57: ...ptical drive out of the drive bay 6 Replace the drive panel see Replacing the Drive Panel 7 Replace the computer cover see Replacing the Computer Cover 8 Connect the computer and devices to electrical outlets and turn them on NOTE If you are uninstalling your only optical drive and will not replace it at this time disconnect the data cable from the system board and set it aside 1 data cable 2 powe...

Page 58: ...t the drive is configured for your computer 6 If no screws are attached to the drive check the inside of the drive panel for screws and if screws are present attach the screws to the new drive 7 Gently slide the drive into the drive bay until you hear a click or feel the drive securely installed NOTE If you are installing an IDE drive configure the drive for the cable select setting 1 optical driv...

Page 59: ... of a coolant leak shut down your system immediately Unplug your system from the power outlet and contact Dell Technical Support l In the event of skin contact with the coolant wash your skin with soap and water Seek medical attention if irritation develops l In the event of eye contact with the coolant rinse your eyes immediately with water with your eyelids open for 15 minutes Seek medical atten...

Page 60: ...rd see System Board Components 9 Loosen the seven screws on the liquid cooling assembly then lift the assembly out of the computer and set it aside NOTE It is not necessary to disconnect the optical drive cables unless you intend to fully remove the optical drive s from the computer For information on how to remove an optical drive see Removing an Optical Drive 1 drive release latch 2 optical driv...

Page 61: ... Replacing the Drive Panel 10 Replace any expansion cards that you removed see Installing PCI and PCI Express Cards 11 Close the computer cover see Replacing the Computer Cover 12 Connect your computer and devices to electrical outlets and turn them on Processor Removing the Processor 1 liquid cooling assembly 2 captive screws 6 3 screw loose NOTICE Ensure that adequate thermal grease is applied t...

Page 62: ...ket Leave the release lever extended in the release position so that the socket is ready for the new processor Installing the Processor 1 Unpack the new processor 2 If the release lever on the socket is not fully extended move it to that position 3 Align the pin 1 corner of the processor and socket 1 processor cover 2 processor 3 socket 4 socket release lever NOTICE Ground yourself by touching an ...

Page 63: ...ical outlets and turn them on Fans Removing the Card Fan 1 Follow the procedures in Before You Begin 2 Remove the computer cover see Removing the Computer Cover 3 Remove any full length expansion cards see Removing PCI and PCI Express Cards 4 Disconnect the fan cable from the FAN_CAGE connector on the system board see System Board Components 5 Press down on the two tabs along the top of the fan ca...

Page 64: ...into place 3 Connect the fan cable to the FAN_CAGE connector on the system board see System Board Components 4 Replace any expansion cards that you removed see Installing PCI and PCI Express Cards 5 Replace the computer cover see Replacing the Computer Cover 1 cage housing 2 fan cage 3 tab 2 1 card fan 2 rubber grommet 4 3 fan cage NOTICE Ensure the fan cable is correctly routed through the openin...

Page 65: ...e fan between the hard drive bays until it snaps into place 2 Connect the fan cable to the FAN_HDD connector on the system board see System Board Components 3 Replace the computer cover see Replacing the Computer Cover 4 Connect your computer and devices to electrical outlets and then turn them on System Board Removing the System Board 1 Follow the procedures in Before You Begin 1 hard drive fan r...

Page 66: ...7 Disconnect all cables from the system board 8 Remove the two screws securing the system board assembly to the chassis then pull on the two tabs to slide the system board assembly towards the front of the computer 9 Carefully lift the system board assembly up and out of the computer Installing the System Board 1 screw 2 2 card fan assembly 3 fan connector NOTICE If you are replacing the system bo...

Page 67: ...system board 10 Replace the computer cover see Replacing the Computer Cover 11 Connect your computer and devices to electrical outlets and then turn them on 12 Flash the system BIOS as needed Power Supply Power Supply PSU DC Connector Pin Assignments NOTICE The system board and metal tray are connected and are installed as one piece NOTICE If you are replacing the system board visually compare the...

Page 68: ... VDC Red 5 VDC Red 7 COM Black COM Black 8 POK Gray POK Gray 9 5 VFP Purple 5 VFP Purple 10 12 VD DC SE Yellow White 12 VD DC SE Yellow White 11 12 VD DC Yellow White 12 VD DC Yellow White 12 3 3 VDC Orange 3 3 VDC Orange 13 3 3 VDC Orange 3 3 VDC Orange 14 12 VDC Blue 12 VDC Blue 15 COM Black COM Black 16 PS_ON Green PS_ON Green 17 COM Black COM Black 18 COM Black COM Black 19 COM Black COM Black...

Page 69: ...ck COM Black 9 12 VB DC SE White 12 VB DC SE White 10 12 VB DC White 12 VB DC White 11 12 VC DC SE Blue White 12 VC DC SE Blue White 12 COM Black COM Black 13 COM Black COM Black 14 COM Black COM Black 15 12 VA DC Yellow 12 VA DC Yellow 16 COM Black COM Black 17 COM Black COM Black 18 COM Black COM Black 19 12 VB DC White 12 VB DC White 20 NC N A NC N A 1 KW Power Supply 750 KW Power Supply Pin Nu...

Page 70: ... Black 5 COM Black COM Black 6 COM Black COM Black NOTE The P3 and P4 connectors are intended for use with the PCI Express graphics cards whose power requirements exceed 75 watts 1 KW Power Supply 750 KW Power Supply Pin Number Signal name 22 AWG Wire Color Signal name 22 AWG Wire Color 1 5 VDC Red 5 VDC Red 2 COM Black COM Black 3 COM Black COM Black 4 12 VE DC Blue Yellow 12 VB DC White 1 KW Pow...

Page 71: ...ellow 12 VB DC White 1 KW Power Supply 750 KW Power Supply Pin Number Signal name 18 AWG Wire Color Signal name 18 AWG Wire Color 1 3 3 VDC Orange 3 3 VDC Orange 2 COM Black COM Black 3 5 VDC Red 5 VDC Red 4 COM Black COM Black 5 12 VE DC Blue Yellow 12 VC DC Blue White 1 KW Power Supply 750 KW Power Supply Pin Number Signal name 18 AWG Wire Color Signal name 18 AWG Wire Color 1 12 VB DC White 12 ...

Page 72: ... 7 Remove the hard drive bays from the chassis Pin Number Signal Name 18 AWG Wire Color 1 12 VB DC White 2 12 VB DC White 3 12 VB DC White 4 COM Black 5 COM Black 6 COM Black Pin Number Signal Name 18 AWG Wire Color 1 12 VC DC Blue White 2 12 VC DC Blue White 3 12 VC DC Blue White 4 COM Black 5 COM Black 6 COM Black NOTE The P15 and P16 connectors are intended for use with the PCI Express graphics...

Page 73: ...y removal 10 Slide the power supply towards the front of the computer to free it from the securing tabs on the computer chassis 11 Slide the power supply toward the hard drive bay area so that it will clear the protruding lip of the chassis and lift the power supply from the computer Installing the Power Supply 1 screws 4 2 hard drive bays 1 power supply screws 4 ...

Page 74: ...er Cover 8 Connect your computer and devices to electrical outlets and then turn them on Front I O Panel Front I O Panel Components Removing the Front I O Panel 1 Follow the procedures in Before You Begin NOTICE To connect a network cable first plug the cable into the network port or device and then plug it into the computer 1 external IEEE 1394 port 2 external USB ports 2 3 power diagnostics hard...

Page 75: ... the chassis and then tighten the four mounting screws 4 Connect the control panel cable to the I O panel connector 5 Replace the processor and card fan assembly 6 Connect the front fan and the card fan to the system board 7 Replace the liquid cooling assembly see Installing the Liquid Cooling Assembly 8 Replace any full length expansion cards see Installing PCI and PCI Express Cards that were uni...

Page 76: ... you begin any of the procedures in this section follow the safety instructions in the Product Information Guide CAUTION A new battery can explode if it is incorrectly installed Replace the battery only with the same or equivalent type recommended by the manufacturer Discard used batteries according to the manufacturer s instructions NOTICE If you pry the battery out of its socket with a blunt obj...

Page 77: ...mputer is heavy and can be difficult to maneuver Seek assistance before attempting to lift move or tilt the computer and always lift correctly to avoid injury avoid bending over while lifting CAUTION The computer stand should be installed at all times to ensure maximum system stability Failure to install the stand could result in the computer tipping over potentially resulting in bodily injury or ...

Page 78: ... of an assistant carefully set the computer upright 7 Connect your computer and devices to electrical outlets and turn them on Back to Contents Page 1 computer cover 2 cover hinge tabs 3 hinge slots NOTICE To connect a network cable first plug the cable into the network port or device and then plug it into the computer ...

Page 79: ...eo editing your performance may benefit from overclocking different subsystems within your computer The Dell XPS 720 H2C Edition ships with an overclocked Intel Core 2 Extreme Edition processor and an H2Ceramic also called H2C or Hot to Cold cooling system designed to improve overall thermal capacity The processor has been overclocked through CPU multiplier overclocking via the BIOS to speeds fast...

Page 80: ... You can start QuickSet by either clicking double clicking or right clicking the QuickSet icon in the Microsoft Windows taskbar The taskbar is located in the lower right corner of your screen For more information about QuickSet right click the QuickSet icon and select Help Back to Contents Page NOTE This feature may not be available on your computer ...

Page 81: ... 25 inch drive bays 4 Can hold an optical or SATA hard drive in a 5 25 inch drive bay carrier NOTE The hard drive carrier is only for use in the 5 25 inch drive bays The floppy drive Media Card Reader and hard drive carriers are not interchangeable 7 front panel LEDs 4 Use the sequence of these diagnostics lights to help troubleshoot a problem with your computer see Dell Diagnostics NOTE The color...

Page 82: ...in bodily injury or damage to the computer 1 microphone connector Use the microphone connector to attach a personal computer microphone for voice or musical input into a sound or telephony program 2 headphone connector Use the headphone connector to attach headphones 3 diagnostic lights 4 Use the sequence of these diagnostics lights to help troubleshoot a problem with your computer see Dell Diagno...

Page 83: ...xists between a 10 Mbps network and the computer l Orange A good connection exists between a 100 Mbps network and the computer l Yellow A good connection exists between a 1000 Mbps 1 Gbps network and the computer l Off The computer is not detecting a physical connection to the network 2 network adapter connector NOTICE Do not plug a telephone cable into the network adapter connector Use the networ...

Page 84: ...ltichannel capable speakers 9 line in connector Use the blue line in connector to attach a record playback device such as a cassette player CD player or VCR On computers with a sound card use the connector on the card 10 line out headphone connector Use the green line out connector to attach headphones and speakers with integrated amplifiers On computers with a sound card use the connector on the ...

Page 85: ...um clearance on all vented sides of the computer to permit the airflow required for proper ventilation l If your enclosure has doors they need to be of a type that allows at least 30 airflow through the enclosure front and back l If your computer is installed in a corner on a desk or under a desk leave at least 5 1 centimeters 2 inch of clearance from the back of the computer to the wall to permit...

Page 86: ...ctions in the Product Information Guide CAUTION To reduce the risk of fire electric shock or injury do not overload an electrical outlet power strip or convenience receptacle The total ampere rating of all products plugged into an electrical outlet power strip or other receptacle should not exceed 80 percent of the branch circuit rating NOTE Depending on the options selected when you purchased you...

Page 87: ...hite DVI port on your computer To connect a monitor with a VGA connector use the blue VGA port on your computer Connecting a Monitor With an Adapter 1 Save and close all open files and exit all open programs 2 Shut down the operating system l In Windows XP click Start Turn Off Computer Turn off l In Windows Vista click Start click the arrow in the lower right corner of the Start menu as shown belo...

Page 88: ...he Start menu as shown below and then click Shut Down The computer turns off after the operating system shutdown process is complete 3 Ensure that the computer and all attached devices are turned off If your computer and attached devices did not automatically turn off when you shut down your operating system press and hold the power button for about 4 seconds to turn them off 4 Connect the DVI or ...

Page 89: ...mer electronics stores An S video cable is not included with your computer 1 Save and close all open files and exit all open programs 2 Shut down the operating system l In Windows XP click Start Turn Off Computer Turn off l In Windows Vista click Start click the arrow in the lower right corner of the Start menu as shown below and then click Shut Down The computer turns off after the operating syst...

Page 90: ...ed A RAID level 0 configuration is recommended for high performance programs while RAID level 1 is recommended for users that desire a high level of data integrity The drives in a RAID configuration should be the same size in order to ensure that the larger drive does not contain unallocated and therefore unusable space RAID level 0 and RAID level 1 require a minimum of two drives RAID level 5 req...

Page 91: ...n a second set of two drives If a drive failure occurs subsequent read and write operations are directed to the other surviving drives A replacement drive can then be rebuilt using the data from the surviving drives Also because data is duplicated on the primary and additional drives four 120 GB RAID level 1 drives collectively have a maximum of 240 GB on which to store data RAID Level 5 Configura...

Page 92: ... SATA drive then press Enter 4 Press the left and right arrow keys to highlight RAID On and then press Enter Repeat the process as needed for each SATA hard drive 5 Press Esc press the left and right arrow keys to highlight Save Exit and then press Enter to exit system setup and resume the boot process Using the NVIDIA MediaShield ROM Utility Hard drives of any size may be used to create a RAID co...

Page 93: ...drives should be of equal size to avoid unallocated or unused space For an explanation of RAID levels and their requirements see About Your RAID Configuration Creating a RAID Array 1 Enable RAID on your hard drives see Setting Your Computer to RAID Enabled Mode 2 After rebooting your computer launch NVIDIA MediaShield 3 Click Create under System Tasks The NVIDIA Create Array Wizard appears and lis...

Page 94: ...ginal configuration RAID 0 to RAID 1 conversions cannot be performed using the migrating process 1 Launch NVIDIA MediaShield 2 Click to select the array you want to convert 3 Click Convert Array in the System Tasks pane The NVIDIA Convert Array Wizard appears 4 Click Next 5 Under RAID Mode Selection select Mirroring Striping Strip Mirroring or RAID 5 from the drop down menu NOTE Only RAID enabled ...

Page 95: ...s and displays the status of the rebuild process Using Multimedia 1 To open the tray press the eject button on the front of the drive 2 Place the disc label side up in the center of the tray 3 To close the tray press the eject button or gently push in the tray To format CDs for storing data to create music CDs or to copy CDs see the CD software that came with your computer NOTICE You will lose all...

Page 96: ... DVD or BD l If you have one optical drive insert the source disc into the drive ensure that the settings are correct and then click the Copy Disc button to NOTE Ensure that you follow all copyright laws when you create media Play Move backward within the current track Pause Move forward within the current track Stop Go to the previous track Eject Go to the next track Stop Restart the current chap...

Page 97: ...reate a DVD R or BD R you cannot write to that disc again if the disc is finalized or closed during the final stage of the disc creation process Use blank DVD RW or BD RE media if you plan to erase rewrite or update information on that disc later CD Writable Drives DVD Writable Drives BD Writable Drives Helpful Tips l Use Microsoft Windows Explorer to drag and drop files to a CD R or CD RW only af...

Page 98: ...onic com for additional information Using a Media Card Reader Optional Use the media card reader to transfer data directly to your computer The media card reader supports the following memory types l xD Picture card l SmartMedia card SMC l CompactFlash card Type I and II CF I II l MicroDrive card l SecureDigital card SD l MiniSD card l MultiMediaCard MMC l Reduced size MultiMediaCard RS MMC l Memo...

Page 99: ...uter for the file transfer 1 Click Start All Programs Accessories System Tools Files and Settings Transfer Wizard The Files and Settings Transfer Wizard welcome screen appears 2 Click Next 3 On the Which computer is this screen click New Computer and then click Next 4 On the Do you have a Windows XP CD screen click I will use the wizard from the Windows XP CD and then click Next 5 When the Now go ...

Page 100: ...Standby Mode Standby mode conserves power by turning off the display and the hard drive after a designated period of time known as a time out When the computer exits from standby mode it returns to the operating state it was in prior to entering standby mode To set standby mode to automatically activate after a defined period of inactivity 1 Click Start and click Control Panel 2 Under Pick a categ...

Page 101: ...n l Home Office Desk If you want your home or office computer to run with little power conservation l Portable Laptop If your computer is a portable computer that you use for traveling l Presentation If you want your computer to run without interruption using no power conservation l Minimal Power Management If you want your computer to run with minimal power conservation l Max Battery If your comp...

Page 102: ... operating state it was in before entering sleep mode To enter sleep mode in Windows Vista click Start click the arrow in the lower right corner of the Start menu and then click Sleep To exit sleep mode press a key on the keyboard or move the mouse Hibernate Mode Hibernate mode conserves power by copying system data to a reserved area on the hard drive and then completely turning off the computer ...

Page 103: ...Vista Start button and click Computer If the drive is not listed perform a full scan with your antivirus software to check for and remove viruses Viruses can sometimes prevent Windows from recognizing the drive Test the drive l Insert another disc to eliminate the possibility that the original drive is defective l Insert a bootable floppy disk and restart the computer Clean the drive or disk See C...

Page 104: ...n power management modes Hard drive problems Run Check Disk Windows XP 1 Click Start and click My Computer 2 Right click Local Disk C 3 Click Properties Tools Check Now 4 Click Scan for and attempt recovery of bad sectors and click Start Windows Vista 1 Click Start and click Computer 2 Right click Local Disk C 3 Click Properties Tools Check Now The User Account Control window may appear If you are...

Page 105: ...trol Panel Printers and Other Hardware Phone and Modem Options Modems 2 Click the COM port for your modem Properties Diagnostics Query Modem to verify that the modem is communicating with Windows If all commands receive responses the modem is operating properly Windows Vista 1 Click Start Control Panel Hardware and Sound Phone and Modem Options Modems 2 Click the COM port for your modem Properties...

Page 106: ...ck Start and click Control Panel 2 Under Pick a Category click Performance and Maintenance System System Properties Hardware Device Manager Windows Vista 1 Click Start Control Panel Hardware and Sound 2 Click Device Manager If your IEEE 1394 device is listed Windows recognizes the device If you have problems with a Dell IEEE 1394 device Contact Dell see Contacting Dell If you have problems with an...

Page 107: ...ogram crashes repeatedly Check the software documentation If necessary uninstall and then reinstall the program A program is designed for an earlier Windows operating system Run the Program Compatibility Wizard Windows XP The Program Compatibility Wizard configures a program so that it runs in an environment similar to non XP operating system environments 1 Click Start All Programs Accessories Pro...

Page 108: ...the memory modules see Memory to ensure that your computer is successfully communicating with the memory l Run the Dell Diagnostics see Dell Diagnostics If you experience other memory problems l Reseat the memory modules see Memory to ensure that your computer is successfully communicating with the memory l Ensure that you are following the memory installation guidelines see Installing Memory l En...

Page 109: ...the mouse or press the power button to resume normal operation If the power light is off The computer is either turned off or is not receiving power l Reseat the power cable in the power connector on the back of the computer and the electrical outlet l Bypass power strips power extension cables and other power protection devices to verify that the computer turns on properly l Ensure that any power...

Page 110: ...nter icon 3 Click Properties Ports For a parallel printer ensure that the Print to the following port s setting is LPT1 Printer Port For a USB printer ensure that the Print to the following port s setting is USB Windows Vista 1 Click Start Control Panel Hardware and Sound Printer 2 If the printer is listed right click the printer icon 3 Click Properties and click Ports 4 Adjust the settings as nee...

Page 111: ... not muted Disconnect headphones from the headphone connector Sound from the speakers is automatically disabled when headphones are connected to the computer s front panel headphone connector Test the electrical outlet Ensure that the electrical outlet is working by testing it with another device such as a lamp Eliminate possible interference Turn off nearby fans fluorescent lights or halogen lamp...

Page 112: ...monitor and running the monitor self test Move the subwoofer away from the monitor If your speaker system includes a subwoofer ensure that the subwoofer is positioned at least 60 centimeters 2 feet away from the monitor Move the monitor away from external power sources Fans fluorescent lights halogen lamps and other electrical devices can cause the screen image to appear shaky Turn off nearby devi...

Page 113: ...Remove and then reinstall any cards see Cards l Eliminate interference Some possible causes of interference are Power keyboard and mouse extension cables Too many devices on a power strip Multiple power strips connected to the same electrical outlet Diagnostic Lights To help troubleshoot a problem your computer has four lights labeled 1 2 3 and 4 on the front panel see Front View When the computer...

Page 114: ...emory l Ensure that the memory you are using is supported by your computer see Memory l If the problem persists contact Dell see Contacting Dell A possible expansion card failure has occurred 1 Determine if a conflict exists by removing an expansion card not a graphics card and restarting the computer see Removing PCI and PCI Express Cards 2 If the problem persists reinstall the card you removed t...

Page 115: ... Drive Error C Drive Failure The hard drive is not working or is not configured correctly Ensure that the hard drive is installed correctly in the computer see Hard Drive and defined correctly in the system setup program see System Setup Cache Memory Bad Do Not Enable Cache The cache memory is not operating See Contacting Dell for instructions on obtaining technical assistance CH 2 Timer Error An ...

Page 116: ...need to be replaced Invalid Boot Diskette The operating system cannot be located on drive A or drive C Enter the system setup program see System Setup and confirm that drive A or drive C is properly identified Keyboard Error The BIOS has detected a stuck key Ensure that nothing is resting on the keyboard if a key appears to be stuck carefully pry it up If the problem persists you may need to repla...

Page 117: ...error code and problem description exactly as it appears and follow the instructions on the screen If you cannot resolve the problem contact Dell see Contacting Dell The following tabs provide additional information for tests run from the Custom Test or Symptom Tree option NOTE Keyboard failure may result when a key on the keyboard is held down for extended periods of time To avoid possible keyboa...

Page 118: ... 1 Click Start Computer System Properties Device Manager 2 Scroll down the list to see if any device has an exclamation point a yellow circle with a on the device icon If an exclamation point is next to the device name you may need to reinstall the driver or install a new driver see Reinstalling Drivers and Utilities Reinstalling Drivers and Utilities Using Windows Device Driver Rollback Custom Te...

Page 119: ...Finish to restart the computer 4 When you see the Windows desktop reinsert the Drivers and Utilities media 5 At the Welcome Dell System Owner screen click Next A message appears stating that the Drivers and Utilities media is detecting hardware in your computer The drivers that are used by your computer are automatically displayed in the My Drivers The Drivers and Utilities media has identified th...

Page 120: ...fter you received the computer Use Dell PC Restore or Dell Factory Image Restore only if System Restore did not resolve your operating system problem l If you received an Operating System disc with your computer you can use it to restore your operating system However using the Operating System disc also deletes all data on the hard drive Use the disc only if System Restore did not resolve your ope...

Page 121: ...data files are permanently deleted from the hard drive Data files include documents spreadsheets e mail messages digital photos music files and so on If possible back up all data before using PC Restore or Factory Image Restore Windows XP Dell PC Restore Using PC Restore 1 Turn on the computer During the boot process a blue bar with www dell com appears at the top of the screen 2 Immediately upon ...

Page 122: ... is deleted and the newly available disk space is added to the free space allocation on the hard drive 6 Right click Local Disk C in Windows Explorer click Properties and verify that the additional disk space is available as indicated by the increased value for Free Space 7 Click Finish to close the PC Restore Removal window and restart the computer Windows Vista Dell Factory Image Restore Using F...

Page 123: ...g System disc 3 Click Exit if the Install Windows message appears 4 Restart the computer When the DELL logo appears press F12 immediately 5 When the boot device list appears highlight CD DVD CD RW Drive and press Enter 6 Press any key to Boot from CD ROM NOTE Depending upon your configuration you may need to select Dell Factory Tools then Dell Factory Image Restore NOTICE If you do not want to pro...

Page 124: ...rt 2 Type hardware troubleshooter in the Search field and click the arrow to start the search 3 Click Hardware Troubleshooter in the Search Results list 4 In the Hardware Troubleshooter list click I need to resolve a hardware conflict on my computer and click Next Windows Vista 1 Click Start and click Help and Support 2 Type hardware troubleshooter in the search field and press Enter to start the ...

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