Keyboard not responding, any idea?

[Holocene]

I have a desktop that I was foced to run a system recovery on. After the recovery was completed, pressing keys would do nothing. The mouse works, so I can navigate around, but I cannot type anything.

Anyone know where I might start? I have two keyboards (USB and serial port) and neither are doing anything.

Thanks a lot.

 

[mgb_phys]

Does the keyboard work in the bios screen?
Are you able to start in safe mode?

 

[sephirothrr]

Did you install new drivers since the point that you restored to?