Windows 2000 install prob

a friend is attempting to install Windows 2000 pro in a system with a PIII (an 733 i believe) and an Asus motherboard. On first try it gave a message to update the Bios. This he did successfully. On second try he got the same message again, then yet again. Unable to get around the prob. Has anyone encountered this?? A motherboard problem maybe??? Is there an workaround for this?