Symptom

Hard disk

Hard disk never spins

Call Center:

Suggestions

Check the power source.

Remove and reinsert the hard drive. Check the contacts.

Repair Center:

Likely Causes

Hard drive or contacts.

Motherboard.

Hard drive case (flex cable).

Repair Center:

Comments

If the drive case is damaged, it can prevent proper operation.

Hard disk makes clunking or scratching noise

Hard disk makes buzzing or whining noise

Files are corrupted

Drive capacity is less than normal

Floppy drive

Back up the drive

Hard drive.

Check the computer and

immediately.

 

drive for evidence of

Was the computer or drive

 

customer abuse.

dropped?

 

 

Back up the drive

Depends on the

 

immediately.

source of the noise.

 

Check for alternate noise

 

 

sources, such as a PCMCIA

 

 

drive or fan.

 

 

If a keystroke causes the

 

 

sound to change, it may be

 

 

power supply noise.

 

 

Run a virus scan program.

 

Use same suggestions

Check the disk surface by

 

shown at left.

running Scandisk (Windows

 

 

95/98) or Disk Administrator

 

 

(Windows NT). Or boot to

 

 

DOS and run CHKDSK to

 

 

look for problems, run

 

 

CHKDSK /f to fix.

 

 

Use Recovery CD to restore

 

 

original factory software.

 

 

Check the disk surface by

Hard drive.

Use same suggestions

running Scandisk (Windows

 

shown at left.

95/98) or Disk Administrator

 

Recreate the Hibernate

(Windows NT).

 

partition, then partition and

Check partitions using FDISK

 

format the disk.

(Windows 95/98) or Disk

 

 

Administrator (Windows NT).

 

 

General problems

Keyboard

Some or all keys do not work properly

PS/2 keyboard and mouse with Y- adapter do not work

Check floppy module contacts.

Try using alternate connection (with or without floppy cable).

Check settings in BIOS Setup.

Check devices separately.

Floppy module or contacts.

Floppy cable. Motherboard.

Keyboard.

Motherboard.

BIOS IC.

Y-adapter.

PS/2 device.

Motherboard.

Try reinserting the flex cable in the connector on the VGA PCA.

3-8

Troubleshooting and Diagnostics

HP OmniBook 4100/4150