Bios shouldn't update by itself, maybe you haven't downgraded it properly. Copy the flash utilities to the bootable diskette.
Follow the steps below to run the Flash16 Utility.I partitioned C: and created a new B: volume which is empty ATM. By default i have two harddrives, C: and D. I managed to fix a few problems but others i need help with such as my so called 'out-of-date' drivers and software that just won't run in vista.