I'd say either your BIOS flash didn't flash correctly, or you flashed a BIOS file that was incompatible with the BIOS on your board. Always remember whenever flashing keep a backup of the original BIOS file that way you can re-flash it back. Of course saying that is probably too late now. You can probably download the old version from the mfgs website. Also always clear the BIOS and set to defaults after flashing any new file.