Reference number: CH000955

No keys on my keyboard work.

Question:

No keys on my keyboard work.

Cause:

This issue is often caused by either a bad keyboard, bad interface board, and/or bad motherboard.

Additional information:

This document contains information about troubleshooting a keyboard that has no functioning keys. If some of the keys are working and some are not see document CH000305.

Answer:

Turn off the computer and disconnect the keyboard from the computer and connect another known working keyboard to it.

New keyboard works

If connecting another keyboard works. Shutdown the computer and try the potentially bad keyboard again. If the keyboard still fails it's bad and should be replaced.

New keyboard doesn't work

If this is a PS/2 keyboard and connecting multiple keyboards or a known working keyboard to the computer PS/2 port does't work unfortunately the PS/2 port is bad. Because this port is part of the motherboard for this issue to be resolved you'll need to replace the motherboard.

Alternative solution

If replacing the motherboard is too costly or not an effective solution you could also consider using a USB keyboard if USB ports are available on the computer.