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

Cause

Solution

 

 

The Num Lock key is turned on.

Press the Num Lock key. The Num Lock light must be off if

 

you want to use the arrow keys on the keypad. You can also

 

disable or enable the Num Lock key in Computer Setup at

 

Advanced > Device Options.

 

 

 

There is no sound or sound volume is too low.

 

 

 

 

Cause

Solution

 

 

System volume may be set low or muted.

1. Check the Computer Setup 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.

In case of forgotten password, power loss, or computer malfunction, you must manually disable the Smart Cover lock . A key to unlock the Smart Cover Lock is not available from HP. Keys are typically available from a hardware store.

Poor performance.

Cause

Solution

 

 

 

Processor is too 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 heat sink 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

Restart the computer.

memory back to the system.

 

 

 

 

 

148 Appendix D Troubleshooting Without Diagnostics

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HP 3500p D8C44UTABA, D3K31UTABA manual Advanced Device Options, There is no sound or sound volume is too low Cause Solution
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E3S87UTABA, Pro 3515 E3S87UTABA, Pro 3400 XZ939UT#ABA, C7A31UT#ABA, Pro 3400 A7L25UT#ABA specifications

The HP D3K31UTABA, 3500p D8C44UTABA, C7A35UT#ABA, D3K31UT#ABA, and D8C44UT#ABA are part of HP's extensive lineup of business laptops and desktop computers, designed to meet the demanding needs of professionals and enterprises. Each model showcases HP's commitment to performance, durability, and user-friendly features, making them suitable for a range of applications in various business environments.

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