If the BIOS was messed up it wouldn't boot.
I have a similar problem with my logitech USB gaming keyboard - it only get's initialized in the OS after booting. So I keep a spare PS/2 keyboard lying around and use that when I want to get into the BIOS.
try it
yeah i already tried that to, i tried with a wireless usb keyboard and a ps/2 board same deal with both lets me press keys on prompt and then just gos to black screen.
yeah like on one of the boards its letting run windows and everything on it, its working fine but it wont let me flash it and it wont enter the bios.
gigabyte should get there shit together, im sick of this goddam tomfoolery.