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d. touchpad cable and USH board cable [4]
e. power connector port cable [5]

12. To remove the system board:

a. Disconnect the M2.0x3.0 screws that secure the system board to computer [1].
b. Lift the system board away from the computer.

Disassembly and reassembly

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Содержание Latitude 7280

Страница 1: ...Dell Latitude 7280 Owner s Manual Regulatory Model P28S Regulatory Type P28S001 September 2021 Rev A09 ...

Страница 2: ...tial damage to hardware or loss of data and tells you how to avoid the problem WARNING A WARNING indicates a potential for property damage personal injury or death 2017 2021 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners ...

Страница 3: ...ase cover 14 Battery 14 Lithium ion battery precautions 14 Removing battery 14 Installing battery 15 PCIe Solid State Drive SSD 15 Removing PCIe SSD 15 Installing PCIe SSD 16 Speaker 16 Removing speaker module 16 Installing speaker module 18 Coin cell battery 18 Removing the coin cell battery 18 Installing coin cell battery 19 WWAN card 19 Removing WWAN card 19 Installing WWAN card 20 WLAN card 20...

Страница 4: ... the display panel nontouch 37 Camera Microphone Module 37 Removing camera microphone module 37 Installing camera 38 Display Hinge Caps 39 Removing the display hinge cap 39 Installing the display hinge cap 39 System board 39 Removing system board 39 Installing system board 43 Keyboard assembly 43 Removing keyboard assembly 43 Installing keyboard assembly 45 Keyboard lattice and Keyboard 46 Removin...

Страница 5: ...ility 65 Virtualization support screen options 65 Wireless screen options 65 Maintenance screen 65 System logs 66 Updating the BIOS 66 Updating the BIOS in Windows 66 Updating the BIOS in Linux and Ubuntu 66 Updating the BIOS using the USB drive in Windows 67 Updating the BIOS from the F12 One Time boot menu 67 System and setup password 68 Assigning a system setup password 68 Deleting or changing ...

Страница 6: ...eal Time Clock reset 74 Recovering the operating system 75 Backup media and recovery options 75 WiFi power cycle 75 Drain residual flea power perform hard reset 75 Chapter 6 Contacting Dell 77 6 Contents ...

Страница 7: ...Windows 8 CAUTION To avoid losing data save and close all open files and exit all open programs before you turn off your computer 1 Turning off your computer In Windows 8 using a touch enabled device a Swipe in from the right edge of the screen opening the Charms menu and select Settings b Tap and then tap Shut down In Windows 8 using a mouse a Point to upper right corner of the screen and click S...

Страница 8: ...ter A component can be replaced or if purchased separately installed by performing the removal procedure in the reverse order NOTE Disconnect all power sources before opening the computer cover or panels After you finish working inside the computer replace all covers panels and screws before connecting to the power source NOTE Before working inside your computer read the safety information that sh...

Страница 9: ...omputer CAUTION To avoid damage to the computer use only the battery designed for this particular Dell computer Do not use batteries designed for other Dell computers 1 Connect any external devices such as a port replicator or media base and replace any cards such as an ExpressCard 2 Connect any telephone or network cables to your computer CAUTION To connect a network cable first plug the cable in...

Страница 10: ... Display Assembly Touch display panel Display Bezel Nontouch display panel Camera Microphone Module Display Hinge Caps System board Keyboard assembly Keyboard lattice and Keyboard Palm rest Screw size list Table 1 Latitude 7280 screw size list Component M2 5 x 6 M2 x 5 M2 5 x 3 5 M2 x 3 M2 5 x 4 M2 x 2 5 M2 x 2 Back cover 8 captive screws Battery 3 cell 1 Battery 4 cell 2 SSD module 1 Heat sink mo...

Страница 11: ...Small plastic scribe Subscriber Identification Module SIM card Removing SIM card or SIM card tray NOTE SIM card or SIM card tray removal is only available on systems that are shipped with WWAN module Hence removing procedure is only applicable for systems that are shipped with WWAN module CAUTION Removing the SIM card when the computer is On may cause data loss or damage the card Ensure that your ...

Страница 12: ...nto the slot Base cover Removing base cover 1 Follow the procedure in Before working inside your computer 2 To release the base cover a Loosen the M2 5 x 6 captive screws 8 that secure the base cover to the computer 1 NOTE Exercise caution when loosening the screws Angle the screwdriver to match the head of the front corners of screw to avoid a possible stripped screw head b Use a plastic scribe t...

Страница 13: ...when loosening the screws Angle the screwdriver to match the head of the screw front corners on the laptop base cover to avoid a possible stripped screw head 3 Lift the base cover from the computer Disassembly and reassembly 13 ...

Страница 14: ...s of any kind to pry on or against the battery Ensure any screws during the servicing of this product are not lost or misplaced to prevent accidental puncture or damage to the battery and other system components If the battery gets stuck inside your computer as a result of swelling do not try to release it as puncturing bending or crushing a lithium ion battery can be dangerous In such an instance...

Страница 15: ...mall battery 3 cell has a single screw a larger battery 4 cell has two screws 4 Install the base cover 5 Follow the procedure in After working inside your computer PCIe Solid State Drive SSD Removing PCIe SSD 1 Follow the procedure in Before working inside your computer 2 Disconnect the battery cable from the connector on the system board 3 To remove the PCIe SSD a Loosen the M2 x3 captive screw t...

Страница 16: ... is shipped with bracket 3 Tighten the M2 x 3 screws to secure it the SSD bracket 4 Connect the battery cable to the connector on the system board 5 Install the base cover 6 Follow the procedure in After working iinside your computer Speaker Removing speaker module 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connecto...

Страница 17: ...speaker cable from the routing clips 2 c Remove the tape that secures the speaker cables to the touchpad board 3 5 To remove the speaker module a Remove the M2 0x3 0 screws 4 that secure the speaker module to the computer 1 b Remove the M2 0x3 0 screws that secure the speaker module to the computer 1 NOTE Refer the speaker screw list c Lift the speaker module from the computer 2 NOTE Ensure to un ...

Страница 18: ...nector on the system board 6 Install the base cover 7 Follow the procedure in After working inside your computer Coin cell battery Removing the coin cell battery 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 To remove the coin cell battery a Disconnect the coin cell battery cable from th...

Страница 19: ...ase cover 6 Follow the procedure in After working inside your computer WWAN card Removing WWAN card 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 To remove the WWAN card a Remove the M2 0 x 3 0 screw that secures the metal bracket to the WWAN card 1 b Lift the metal bracket that secures ...

Страница 20: ...TE The IMEI number can also be found on the WWAN card WLAN card Removing WLAN card 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 To remove the WLAN card a Remove the M2 0 x 3 0 screw that secures the metal bracket to the WLAN card 1 b Lift the metal bracket 2 c Disconnect the WLAN cables...

Страница 21: ...em board 5 Install the base cover 6 Follow the procedure in After working inside your computer Memory modules Removing memory module 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 To remove the memory module a Pull the clips securing the memory module until the module snaps out 1 b Remove...

Страница 22: ... fan 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 To remove the heat sink assembly NOTE To identify the number of screws see screw list a Disconnect the fan cable from the system board 1 NOTE After removing the heat sink assembly ensure to disconnect the fan cable b Remove the M2 0 x 5 ...

Страница 23: ...4 as indicated on the heat sink 3 Tighten the M2 0 x 5 0 screws to secure the fan to the system board 4 Connect the fan cable to the connector on the system board 5 Connect the battery cable to the connector on the system board 6 Install the base cover 7 Follow the procedure in After working inside your computer Power connector port Removing power connector port 1 Follow the procedure in Before wo...

Страница 24: ...nnector port 1 Install the power connector port into the slot on the computer 2 Place the metal bracket on the power connector port 3 Tighten the M2 0x3 0 screw to secure the power connector port to the computer 4 Connect the power connector port cable to the connector on the system board 5 Connect the battery cable to the connector on the system board 6 Install the base cover 7 Follow the procedu...

Страница 25: ...es the LED board to the computer 3 d Lift the LED board from the computer 4 Installing LED board 1 Insert the LED board into the slot on the computer 2 Tighten the M2 0 x 2 5 screw to secure the LED board 3 Route the LED cable through the routing channel 4 Connect the LED cable to the system board 5 Connect the battery cable to the connector on the system board 6 Install the base cover 7 Follow th...

Страница 26: ...onnector to avoid damage to the smart card head b Lift the smart card cable that is affixed to the touchpad module 2 NOTE Ensure to pull gently to release it with adhesive tape 6 To remove the smart card cage NOTE To identify the number of screws see screw list a Remove the M2 x 3 screws 2 that secure the smart card cage to the computer 1 b Slide and lift the smart card cage from the computer 2 26...

Страница 27: ...over 7 Follow the procedure in After working inside your computer Touchpad Removing touchpad buttons board 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 Remove the speaker 5 To disconnect the smart card cable a Disconnect the smart card cable 1 b Lift the smart card cable that is affixed...

Страница 28: ...able from the touchpad board 1 NOTE The touchpad buttons board cable is below the smart card cable Ensure to lift the latch to release the touchpad button board cable b Remove M2 0 x 2 5 screws 2 that secure the touchpad buttons board 2 NOTE To identify the screws see screw list c Lift the touchpad buttons board from the computer 3 28 Disassembly and reassembly ...

Страница 29: ...nnector on the computer 5 Install the speaker 6 Connect the battery cable to the connector on the system board 7 Install the base cover 8 Follow the procedure in After working inside your computer Display Assembly Removing display assembly 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Disconnect the battery cable from the connector on the system board 4 Re...

Страница 30: ...to disconnect it from the connector on the system board 4 e Un route the eDP cable from the routing channel 5 7 To remove the display assembly a Open the display of the computer and lay it on a flat surface at an 180 degree angle b Remove the M2 5 x 4 0 screws that secure the display hinge to the display assembly 1 c Lift the display assembly from the computer 30 Disassembly and reassembly ...

Страница 31: ...en the M2 0 x 5 0 screws 7 Route the WLAN and WWAN cables through the routing channels 8 Install the WLAN card 9 Install the WWAN card 10 Connect the battery cable to the connector on the system board 11 Install the base cover 12 Follow the procedure in After working inside your computer Touch display panel Removing touch display panel NOTE The touch display panel removal procedure is applicable o...

Страница 32: ...f the display panel b Flip the display screen over from the top c Peel the adhesive tape 1 Mylar shield 2 d Release the latch 3 and disconnect the eDP cable 4 e Peel the adhesive tape 5 and disconnect the IR cable 6 32 Disassembly and reassembly ...

Страница 33: ...s and the Mylar shield 4 Press the edges of the display panel until it clicks into the display assembly 5 Install the display assembly 6 Install the WLAN card 7 Install the WWAN card 8 Connect the battery cable to the connector on the system board 9 Install the base cover 10 Follow the procedure in After working inside your computer Display Bezel Removing display bezel nontouch NOTE The display be...

Страница 34: ... nontouch NOTE The display bezel installation procedure is applicable only for nontouch display configuration 1 Place the display bezel on the display assembly 2 Press the edges of the display bezel until it clicks onto the display assembly NOTE Adhesive is used to secure the display bezel to the display panel 3 Install the display assembly 4 Install the WLAN card 5 Install the WWAN card 6 Connect...

Страница 35: ... Remove the hinge caps 9 To remove the display panel a Remove the two M2 0 x 2 0 screws on the panel 1 b Lift the top edge of the display panel 2 and flip the display panel over c Peel off the display connector adhesive strip from the display panel 1 d Peel off the Mylar tape securing the display cable on the back of the display panel 2 e Lift the metal tab and disconnect the display cable from th...

Страница 36: ...f Remove the display panel 36 Disassembly and reassembly ...

Страница 37: ...orking inside your computer Camera Microphone Module Removing camera microphone module The removal procedure of the microphone camera module is only for a nontouch display configuration 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Remove the WLAN card 4 Remove the WWAN card 5 Disconnect the battery cable from the connector on the system board 6 Remove the...

Страница 38: ...ra module 4 Install the display bezel 5 Install the display assembly 6 Install the display hinges 7 Install the display panel 8 Install the WLAN card 9 Install the WWAN card 10 Connect the battery cable to the connector on the system board 11 Install the base cover 12 Follow the procedure in After working inside your computer NOTE The two conductive tape pieces must be removed and then reattached ...

Страница 39: ...and remove the display hinge cap from the display panel Installing the display hinge cap 1 Place the display hinge cap on the slot and slide it back to fit on the display assembly 2 Install the display assembly 3 Install the WLAN card 4 Install the WWAN card 5 Connect the battery cable to the connector on the system board 6 Install the base cover 7 Follow the procedure in After working inside your...

Страница 40: ...cted The IR cable is located beneath the eDP cable connector a Un route the WLAN and WWAN cables from the routing channels 1 b Remove the M2 0 x 3 0 screws that secure the eDP cable 2 c Remove the eDP cable bracket 3 d Disconnect the eDP cable from the system board 4 e Lift the tape that secures the eDP cable to the system board 5 11 To disconnect the cables NOTE To disconnect the speaker LED boar...

Страница 41: ...board cable 4 e power connector port cable 5 12 To remove the system board a Disconnect the M2 0x3 0 screws that secure the system board to computer 1 b Lift the system board away from the computer Disassembly and reassembly 41 ...

Страница 42: ...move the M2 0x5 0 screws that secure the USB Type C bracket 14 Flip the system board peel off the tapes securing the bracket and remove the USB Type C port from the system board 42 Disassembly and reassembly ...

Страница 43: ...the system board that was removed 10 Place the metal bracket over the memory module connectors and tighten the M2 x 3 screws to secure it to the computer NOTE If your computer has a WWAN card then SIM card tray installation is a requirement 11 Install the coin cell battery 12 Install the heat sink 13 Install the WLAN card 14 Install the WWAN card 15 Install the SSD card 16 Install the memory modul...

Страница 44: ...onnect the cables from the palmrest end a touchpad and USH board cables 1 b keyboard backlight cable 2 c keyboard cable 3 11 To remove the keyboard assembly NOTE To identify the screws see screw list a Remove the M2 0 x 2 5 screws that secure the keyboard 1 b Lift the keyboard assembly from the chassis 2 44 Disassembly and reassembly ...

Страница 45: ...computer 2 Tighten the M2 0 x 2 5 screws that secure the keyboard to the chassis 3 Connect the keyboard cable keyboard backlight cable touchpad cable and USH cable to the connectors on the touchpad buttons board 4 Install the system board 5 Install the heat sink 6 Install the WLAN card 7 Install the WWAN card 8 Install the SSD card 9 Install the memory module 10 Connect the battery cable to the co...

Страница 46: ...yboard to the keyboard assembly 4 Lift the keyboard away from the keyboard tray Installing keyboard to keyboard tray 1 Align the keyboard with the screw holders on the keyboard tray 2 Tighten the five M2 0 x 2 0 screws to secure the keyboard to the keyboard tray 3 Install the keyboard assembly Palm rest Replacing palm rest 1 Follow the procedure in Before working inside your computer 46 Disassembl...

Страница 47: ...j speaker k display assembly l system board m keyboard The component that you are left with is the palm rest 3 Replace the palm rest 4 Install the a keyboard b system board c display assembly d speaker e coin cell battery f heatsink g power connector port h WLAN card i WWAN card j PCIe SSD k memory l battery m base cover Disassembly and reassembly 47 ...

Страница 48: ...5 Follow the procedure in After working inside your computer 48 Disassembly and reassembly ...

Страница 49: ...C adapter specifications Docking options Port and connector specifications Communication specifications Camera specifications Touchpad specifications Display specifications Physical specifications Environmental specifications Supported operating systems The topic lists the operating systems supported for Latitude 7280 system Table 2 Supported operating systems Supported operating systems Descripti...

Страница 50: ...ge specifications This laptop supports one M 2 SATA SSD or M 2 PCIe NVMe SSD The options are Up to 512 GB SATA SSD Up to 1 TB PCIe NVMe SSD Up to 512 GB NVMe SED SSD Video specifications Table 4 Video specifications Feature Specifications UMA controller Intel Integrated HD Graphics 620Intel Integrated HD Graphics 520 available with Intel 6th Gen Core I only External display support On system eDP i...

Страница 51: ...ation Type 3 cell Lithium Prismatic battery with ExpressCharge 4 cell Lithium Prismatic battery with ExpressCharge 42 WHr 3 cell Length 200 5 mm 7 89 inches Width 95 9 mm 3 78 inches Height 5 7 mm 0 22 inch Weight 185 0 g 0 41 lb Voltage 11 4 VDC 60 WHr 4 cell Length 238 mm 9 37 inches Width 95 9 mm 3 78 inch Height 5 7 mm 0 22 inch Weight 270 g 0 6 lb Voltage 7 6 VDC Life span 300 discharge per c...

Страница 52: ...ing stations are sold separately Options Dell Dock WD15 Dell Dock Stand DS1000 Dell Thunderbolt Dock TB16 Port and connector specifications Table 5 Temperature specifications Feature Specifications Audio Microphone in stereo headphones and headset combo connectorRealtek ALC3246 ControllerStereo conversion 24 bit analog to digital and digital to analog Internal interface high definition audio codec...

Страница 53: ...DMI 1 4 Communication specifications Features Specification Network adapter Intel i219LM Gigabit Ethernet Controller 10 100 1000 Mb s RJ 45 Camera specifications NOTE Systems with FHD display are also shipped with an optional IR camera that supports Windows hello feature Feature Specification Type HD fixed focus Sensor type CMOS sensor technology Imaging rate Up to 30 frames per second Video Resol...

Страница 54: ...HD anti glare Luminance 300 nits Height 155 52 mm 6 12 inches Width 276 62 mm 10 89 inches Diagonal 317 5 mm 12 5 inches Maximum resolution 1920 x 1080 Refresh rate 60 Hz Maximum viewing angles horizontal 80 Maximum viewing angles vertical 80 Pixel pitch 0 144 x 0 144 mm Feature Specification FHD anti smudge Luminance 300 nits Height 155 52 mm 6 12 inches Width 276 62 mm 10 89 inches Diagonal 305 ...

Страница 55: ...attery 1 18 kg 2 61 lbs Environmental specifications Table 6 Temperature specifications Temperature Specifications Operating 0 C to 60 C 32 F to 140 F Storage 51 C to 71 C 59 F to 159 F Table 7 Relative humidity specifications Temperature Specifications Operating 10 to 90 non condensing Storage 5 to 95 non condensing Table 8 Altitude maximum specifications Temperature Specifications Operating 15 2...

Страница 56: ... the BIOS System and setup password Clearing CMOS settings Clearing BIOS System Setup and System passwords BIOS overview The BIOS manages data flow between the computer s operating system and attached devices such as hard disk video adapter keyboard mouse and printer Entering BIOS setup program 1 Turn on your computer 2 Press F2 immediately to enter the BIOS setup program NOTE If you wait too long...

Страница 57: ...ot sequence screen also displays the option to access the System Setup screen System setup options NOTE Depending on the laptop and its installed devices the items listed in this section may or may not appear General screen options This section lists the primary hardware features of your computer Option Description System Information This section lists the primary hardware features of your compute...

Страница 58: ...he integrated network controller The options are Disabled Enabled Enable UEFI network stack This option is enabled by default Enabled w PXE Parallel Port Allows you to configure the parallel port on the docking station The options are Disabled AT This option is enabled by default PS2 ECP Serial Port Allows you to configure the integrated serial port The options are Disabled COM1 This option is ena...

Страница 59: ...rated audio controller By default the Enable Audio option is selected The options are Enable Microphone by default enable Enable Internal Speaker by default enable Keyboard Illumination This field lets you choose the operating mode of the keyboard illumination feature The keyboard brightness level can be set from 0 to 100 The options are Disabled enabled by default Dim 50 Bright Keyboard Backlight...

Страница 60: ...t change or delete the administrator admin password NOTE You must set the admin password before you set the system or hard drive password Deleting the admin password automatically deletes the system password and the hard drive password NOTE Successful password changes take effect immediately Default setting Not set System Password Allows you to set change or delete the system password NOTE Success...

Страница 61: ...ear PPI Bypass for Enable Commands PPI Bypass for Disabled Commands Attestation enable enabled by default Key storage enable enabled by default SHA 256 enabled by default Disabled Enabled enabled by default NOTE To upgrade or downgrade TPM 2 0 download the TPM wrapper tool software Computrace Allows you to activate or disable the optional Computrace software The options are Deactivate Disable Acti...

Страница 62: ...ys restore to default settings Intel software guard extensions screen options Option Description Intel SGX Enable This field specifies you to provide a secured environment for running code storing sensitive information in the context of the main OS The options are Disabled Enabled Default setting Enabled Enclave Memory Size This option sets SGX Enclave Reserve Memory Size The options are 32 MB 64 ...

Страница 63: ...ke the system from Standby NOTE This feature is only functional when the AC power adapter is connected If the AC power adapter is removed during Standby the system setup removes power from all the USB ports to conserve battery power Enable USB Wake Support Wake on Dell USB C dock Default setting The option is disabled Wake on WLAN Allows you to enable or disable the feature that powers on the comp...

Страница 64: ...e keypad that is embedded in the internal keyboard Fn Key Only default By Numlock NOTE When setup is running this option has no effect Setup works in Fn Key Only mode Mouse Touchpad Allows you to define how the system handles mouse and touch pad input The options are Serial Mouse PS2 Mouse Touchpad PS 2 Mouse This option is enabled by default Numlock Enable Allows you to enable the Numlock option ...

Страница 65: ...Technology and the Virtualization technology for direct I O must be enabled to use this feature Trusted Execution disabled by default Wireless screen options Option Description Wireless Switch Allows to set the wireless devices that can be controlled by the wireless switch The options are WWAN GPS on WWAN Module WLAN WiGig Bluetooth All the options are enabled by default NOTE For WLAN and WiGig en...

Страница 66: ...hen be prompted to enter the recovery key to progress and the system will ask for this on each reboot If the recovery key is not known this can result in data loss or an unnecessary operating system re install For more information on this subject see Knowledge Article https www dell com support article sln153694 1 Go to www dell com support 2 Click Product support In the Search support box enter t...

Страница 67: ...ery key is not known this can result in data loss or an unnecessary operating system re install For more information on this subject see Knowledge Article https www dell com support article sln153694 BIOS Update You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12 One Time boot menu on the computer Most of the Dell computers built af...

Страница 68: ...password can have up to 32 characters At least one special character _ Numbers 0 through 9 Upper case letters from A to Z Lower case letters from a to z 3 Type the system password that you entered earlier in the Confirm new password field and click OK 4 Press Esc and save the changes as prompted by the pop up message 5 Press Y to save the changes The computer restarts Deleting or changing an exist...

Страница 69: ...ve the coin cell battery 4 Wait for one minute 5 Replace the coin cell battery 6 Connect the battery cable to the system board 7 Replace the base cover Clearing BIOS System Setup and System passwords To clear the system or BIOS passwords contact Dell technical support as described at www dell com contactdell NOTE For information on how to reset Windows or application passwords refer to the documen...

Страница 70: ...tem To discharge the battery unplug the AC adapter from the system and operate the system only on battery power When the system will no longer power on when the power button is pressed the battery is fully discharged Do not crush drop mutilate or penetrate the battery with foreign objects Do not expose the battery to high temperatures or disassemble battery packs and cells Do not apply pressure to...

Страница 71: ...s 3 On the boot menu screen select the Diagnostics option 4 Click the arrow at the bottom left corner Diagnostics front page is displayed 5 Click the arrow in the lower right corner to go to the page listing The items detected are listed 6 To run a diagnostic test on a specific device press Esc and click Yes to stop the diagnostic test 7 Select the device from the left pane and click Run Tests 8 I...

Страница 72: ... For cases when a 2 8 error code is shown replace the system board LCD Built in Self Test BIST Dell laptops have a built in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with the LCD screen of the Dell laptop or with the video card GPU and PC settings When you notice screen abnormalities like flickering distortion clarity issues fuzz...

Страница 73: ... 2 2 System board failure included BIOS corruption or ROM error Flash latest BIOS version If problem persists replace the system board 2 3 No memory RAM detected Confirm that the memory module is installed properly If problem persists replace the memory module 2 4 Memory RAM failure Reset and swap memory modules among the slots If problem persists replace the memory module 2 5 Invalid memory insta...

Страница 74: ...ps Lock or Nums Lock Power button LED without Fingerprint reader and Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre boot System Performance Check diagnostics Real Time Clock reset The Real Time Clock RTC reset function allows you to recover your Dell system from No POST No Boot No Power situations To initiate the RTC reset on the system make sure ...

Страница 75: ...ll proposes multiple options for recovering Windows operating system on your Dell PC For more information see Dell Windows Backup Media and Recovery Options WiFi power cycle If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed The following procedure provides the instructions on how to conduct a WiFi power cycle NOTE Some I...

Страница 76: ...lea power 6 Install the battery 7 Install the base cover 8 Connect the power adapter to your computer 9 Turn on your computer NOTE For more information about performing a hard reset see the knowledge base article 000130881 at www dell com support 76 Troubleshooting ...

Страница 77: ... service options Availability varies by country and product and some services may not be available in your area To contact Dell for sales technical support or customer service issues 1 Go to Dell com support 2 Select your support category 3 Verify your country or region in the Choose a Country Region drop down list at the bottom of the page 4 Select the appropriate service or support link based on...

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