If There Is A Keyboard Or Mouse Test Error - HP Net PC 20 Troubleshooting Manual

Problem
Power-On-Self-Test displays a
keyboard or mouse test error.
If the keyboard / mouse still do not work
.
If the keyboard / mouse still do not work
If the keyboard / mouse still do not work
WARNING: For your safety,
never remove the PC's cover
without first removing the
power cord from the power
outlet, and any connection
to a telecommunication
network. Always replace
the cover before switching
the PC on again.
If the PC boots but you still have a problem...
1 Troubleshooting Your PC

If There Is a Keyboard or Mouse Test Error

If There Is a Keyboard or Mouse Test Error
Check that...
The keyboard and mouse cables are
correctly connected.
The keyboard is clean and no keys are
stuck down.
The mouse is clean.
The keyboard / mouse are working.
The system board is working.
If the keyboard works under MS-DOS,
check you have correctly configured
the keyboard for Windows.
11 English
Switch off the PC.
•
Plug the cables into the correct connectors on the back of
•
the PC.
Check all keys are at the same height, and none are stuck
•
(keyboard).
Clean the mouse ball as shown below.
•
Switch off the PC.
•
Replace the keyboard / mouse by known good units.
•
Switch on the PC, and check it works.
•
Disconnect the power cord.
•
Open the PC.
•
Replace the system board by a known good board from a
•
similar PC.
Close the PC, reconnect the power cord and check that the
•
PC boots (starts).
If the keyboard/mouse works, contact HP Support or your
•
authorized dealer for further troubleshooting information.
Run Windows Setup and check you chose the correct keyboard.
(Refer to your Operating System documentation for details.)
How