Symptom
Erratic display
Bright or missing pixels or lines
Hard disk
Hard disk never spins
Hard disk makes clunking or scratching noise
Call Center:
Suggestions
See quality statement on page
Check the power source.
Remove and reinsert the hard drive. Check the contacts.
Back up the drive immediately.
Was the computer or drive dropped?
Repair Center:
Likely Causes
LCD cable or connections.
LCD module.
LCD module.
LCD cable or connections.
Hard drive or contacts.
Motherboard.
Hard drive case (flex cable).
Hard drive.
Repair Center:
Comments
See quality statement on page
If the drive case is damaged, it can prevent proper operation.
Check the computer and drive for evidence of customer abuse.
Hard disk makes buzzing or whining noise
Files are corrupted
Drive capacity is less than normal
Floppy drive
Back up the drive | Depends on the |
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immediately. | source of the noise. |
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Check for alternate noise |
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sources, such as a PCMCIA |
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drive or fan. |
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If a keystroke causes the |
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sound to change, it may be |
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power supply noise. |
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Run a virus scan program. |
| Use same suggestions |
Check the disk surface by |
| shown at left. |
running Scandisk (Windows |
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95) or Disk Administrator |
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(Windows NT). Or boot to |
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DOS and run CHKDSK to |
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look for problems, run |
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CHKDSK /f to fix. |
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Use Recovery CD to restore |
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original factory software. |
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Check the disk surface by | Hard drive. | Use same suggestions |
running Scandisk (Windows |
| shown at left. |
95) or Disk Administrator |
| Recreate the Hibernate |
(Windows NT). |
| partition, then partition and |
Check partitions using FDISK |
| format the disk. |
(Windows 95) or Disk |
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Administrator (Windows NT). |
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General problems
Keyboard
Some or all keys do not work properly
Check floppy module contacts.
Try using alternate connection (with or without floppy cable).
Check settings in BIOS Setup.
Floppy module or contacts.
Floppy cable. Motherboard.
Keyboard.
Motherboard.
BIOS IC.
HP OmniBook 4100 | Troubleshooting and Diagnostics |