Are you using a USB keyboard? If so, try a non-USB one and see if that
works. If it does, and you can now get into BIOS, look for the section that
enables Legacy USB Devices and make sure it is enabled.
--
SC Tom
"Owning a handgun doesn't make you armed
any more than owning a guitar makes you a musician."
Lt. Col. J.D. "Jeff" Cooper, USMC, Ret.