Key board Killer (help)

I am using an ABIT ZM6 (440ZX) motherboard with the latest BIOS update.

For some reason it kills the keyboard. Sometimes it shuts it’s self down without warning.

Sometimes want boot without unpluging the keyboard then pluging it back in again.

I think it might be related to the power supply or motherboard.

Any other Ideas, have tried 3 different keyboards.