You haven't mentioned it, so starting with the easy part..
Have you tried enabling your backup BIOS? Even if it is on the same version (and you should never do that, precisely so as to have a backup).
Also and no offense to the mods here, but this site is /crickets. If it wasn't for the kindness of some members, nothing would ever be answered. If/when you come to to see that, i sincerely suggest techpowerup forums.
They've helped me with two boards already and in one case in particular, it sure took some patience on their behalf. Sounds like i'm advertising i know, but you look at my posts here and you look at the replies, lol; then look at the time elapsed and you'll get my point..
Best of luck to you either way.