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Cursor will not move using the arrow keys on the keypad.

Cause

Solution

The 

Num Lock

 key may be on.

Press the 

Num Lock

 key. The Num Lock light should not be on

if you want to use the 

arrow

 keys. The 

Num Lock

 key can be

disabled (or enabled) in Computer Setup.

There is no sound or sound volume is too low.

Cause

Solution

System volume may be set low or muted.

1.

Check the F10 BIOS settings to make sure the internal
system speaker is not muted (this setting does not affect
the external speakers).

2.

Make sure the external speakers are properly connected
and powered on and that the speakers' volume control is
set correctly.

3.

Use the system volume control available in the operating
system to make sure the speakers are not muted or to
increase the volume.

Cannot remove computer cover or access panel.

Cause

Solution

Smart Cover Lock, featured on some computers, is locked.

Unlock the Smart Cover Lock using Computer Setup.

The Smart Cover FailSafe Key, a device for manually disabling
the Smart Cover Lock, is available from HP. You will need the
FailSafe Key in case of forgotten password, power loss, or
computer malfunction. Order PN 166527-001 for the wrench-
style key or PN 166527-002 for the screwdriver bit key.

Poor performance is experienced.

Cause

Solution

Processor is hot.

1.

Make sure airflow to the computer is not blocked. Leave
a 10.2-cm (4-inch) clearance on all vented sides of the
computer and above the monitor to permit the required
airflow

2.

Make sure fans are connected and working properly
(some fans only operate when needed).

3.

Make sure the processor heatsink is installed properly.

Hard drive is full.

Transfer data from the hard drive to create more space on the
hard drive.

Low on memory.

Add more memory.

Hard drive fragmented.

Defragment hard drive.

Program previously accessed did not release reserved
memory back to the system.

Restart the computer.

Table 1

  Solving General Problems (continued)

ENWW

Basic Troubleshooting

9

Содержание dc72 - Blade Workstation Client

Страница 1: ......

Страница 2: ......

Страница 3: ...Quick Setup Getting Started Business PCs ...

Страница 4: ...y statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein This document contains proprietary information that is protected by copyright No part of this document may be photocopied reproduced or translated to another language without the prior w...

Страница 5: ...low directions could result in bodily harm or loss of life CAUTION Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information NOTE Text set off in this manner provides important supplemental information ENWW iii ...

Страница 6: ...iv About This Book ENWW ...

Страница 7: ...mizing the Monitor Display 2 Protecting the Software 2 HP Backup and Recovery Manager 2 Turning Off the Computer 3 Finding More Information 4 Using the Documentation and Diagnostics CD 5 Before You Call for Technical Support 5 Helpful Hints 7 Basic Troubleshooting 7 Solving General Problems 8 Solving Hardware Installation Problems 11 Interpreting POST Diagnostic Front Panel LEDs and Audible Codes ...

Страница 8: ...vi ENWW ...

Страница 9: ...0 minutes depending on which operating system is being installed Carefully read and follow the instructions on the screen to complete the installation CAUTION Once the automatic installation has begun DO NOT TURN OFF THE COMPUTER UNTIL THE PROCESS IS COMPLETE Turning off the computer during the installation process may damage the software that runs the computer or prevent its proper installation N...

Страница 10: ...g system to the appropriate drivers Obtain the latest support software including support software for the operating system from www hp com support Select your country and language select Download drivers and software enter the model number of the computer and press Enter Customizing the Monitor Display If you wish you can select or change the monitor model refresh rates screen resolution color set...

Страница 11: ... Partition press F11 at startup when you see the message Press F11 for Emergency Recovery NOTE For more information on using HP Backup and Recovery Manager refer to the HP Backup and Recovery Manager User Guide by selecting Start HP Backup and Recovery HP Backup and Recovery Manager Manual You can order a Recovery Disc Set from HP by calling the HP support center Go to the following Web site selec...

Страница 12: ...s or when installing new hardware devices Desktop Management Guide PDF on the CD Provides definitions and how to instructions for security and Intelligent Manageability features that are preinstalled on some models Network Internet Communications Guide PDF on the CD Provides basic networking information and instructions for installing device drivers and using network interface controller NIC featu...

Страница 13: ...d and install Adobe Acrobat Reader for Linux from www adobe com Before You Call for Technical Support If you are having problems with the computer try the appropriate solutions below to try to isolate the exact problem before calling for technical support Run the diagnostics utility Refer to the Troubleshooting Guide on the Documentation and Diagnostics CD for more information Run the Drive Protec...

Страница 14: ... self solve diagnostics If you need to contact HP support use HP Instant Support Profession Edition s online chat feature Access HP Instant Support Professional Edition at www hp com go ispe Access the Business Support Center BSC at www hp com go bizsupport for the latest online support information software and drivers proactive notification and worldwide community of peers and HP experts If it be...

Страница 15: ...s set in Computer Setup If it does not restart press the power button to start the computer Reconfigure your computer after installing a non plug and play expansion board or other option See Solving Hardware Installation Problems on page 11 for instructions Be sure that all the needed device drivers have been installed For example if you are using a printer you need a driver for that model printer...

Страница 16: ... Software control of the power switch is not functional 1 Press and hold the power button for at least four seconds until the computer turns off 2 Disconnect the power cord from the electrical outlet Computer will not respond to USB keyboard or mouse Cause Solution Computer is in standby mode To resume from standby mode press the power button or press any key CAUTION When attempting to resume from...

Страница 17: ...d Unlock the Smart Cover Lock using Computer Setup The Smart Cover FailSafe Key a device for manually disabling the Smart Cover Lock is available from HP You will need the FailSafe Key in case of forgotten password power loss or computer malfunction Order PN 166527 001 for the wrench style key or PN 166527 002 for the screwdriver bit key Poor performance is experienced Cause Solution Processor is ...

Страница 18: ...blocked or not turning OR The heatsink is not properly attached to the processor 1 Ensure that the computer air vents are not blocked and the processor cooling fan is running 2 Open hood press power button and see if the processor fan spins If the processor fan is not spinning make sure the fan s cable is plugged onto the system board header 3 If fan is plugged in but is not spinning then replace ...

Страница 19: ... injury from electrical shock and or hot surfaces be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching Look for the LED between the DIMM sockets If the LED is illuminated the system still has power Power off the computer and remove the power cord before proceeding Table 2 Solving Hardware Installation Problems A new device is no...

Страница 20: ... of the computer Beeps and flashing LEDs are codes for specific problems 3 If you still cannot resolve the issue contact Customer Support Power LED flashes Red five times once every second followed by a two second pause and the computer beeps five times Beeps stop after fifth iteration but LEDs continue flashing Cause Solution Memory is installed incorrectly or is bad CAUTION To avoid damage to th...

Страница 21: ...ell as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them WARNING When the computer is plugged into an AC power source voltage is always applied to the system board To reduce the risk of personal injury from electrical shock and or hot surfaces be sure to disconnect the power cord from the wall outlet and allow the...

Страница 22: ...resent 2 Reseat the processor Red Power LED flashes four times once every second followed by a two second pause Beeps stop after fifth iteration but LEDs continue until problem is solved 4 Power failure power supply is overloaded 1 Open the hood and ensure the 4 or 6 wire power supply cable is seated into the connector on the system board 2 Check if a device is causing the problem by removing ALL ...

Страница 23: ... once every second followed by a two second pause Beeps stop after fifth iteration but LEDs continue until problem is solved 9 System powers on but is unable to boot 1 Check that the voltage selector located on the rear of the power supply some models is set to the appropriate voltage Proper voltage setting depends on your region 2 Replace the system board 3 Replace the processor Red Power LED fla...

Страница 24: ... supply cables are properly connected to the system board 4 Check to see if the 5V_aux light on the system board is turned on If it is turned on then replace the power button harness If the problem persists replace the system board 5 If the 5V_aux light on the system board is not turned on remove the expansion cards one at a time until the 5V_aux light on the system board turns on It the problem p...

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