Use the ps2 keyboard when booting up, and keep pressing whatever gets you to the bios. (delete or F2 or whatever it is.) If that doesn't work you'll need to clear the bios to factory defaults. You can do that with a jumper on the motherboard if you have the motherboard docs handy to figure out which jumper clears the bios. (Usually it's the jumper closest to the motherboard battery, but not always.) The easiest way is to unplug the computer and remove the motherboard battery for a few minutes, then put it back in, then plug in the computer, and reboot with the ps2 keyboard in. Make sure you don't fry your motherboard with static electricity. Before you unplug the computer from the wall, touch your power supply, with the computer turned off, then unplug from the wall, that should clear any static charge.
Let me know if this worked for you...
Best of luck....
P.S. You might want to enable usb keyboard support, rather than usb legacy support, although I suspect your problem is something else entirely. Best of luck.
Last edited by budword; 11-26-2006 at 12:17 AM.