HP Vectra VL800 Troubleshooting Manual page 22

Symptom...
POST displays a keyboard The keyboard and mouse cables are
test error. correctly connected.
The keyboard is clean and no keys are
stuck down.
The mouse is clean.
The keyboard/mouse are working
If the PC boots but you still have a problem...
You may need to update the Basic Input Output System (BIOS).
If the keyboard/mouse still does not work
The system board is working.
If the problem persists, contact HP Support or your authorized dealer
2 Use or Configuration Problems
If There is a Keyboard Test Error
If There is a Keyboard Test Error
Check that...
Check that...
22
Plug the cables into the correct connectors on the back of the PC. These
connectors are easily identified by their color coded icon.
•
Check all keys are at the same height, and none are stuck
(keyboard).
•
Clean the mouse ball and sensors.
Replace the keyboard/mouse by known working units.
Create a bootable floppy to update the BIOS. Refer to page 31.
There is a possible problem with the system board. Contact HP Support
or your authorized dealer.
How...
If not...