contact manufacturer... you can set the MBD jumper to recover, get the correct bios version and reflash it IF you can power up at all. otherwise, you're screwed. as a note, most bios flashes contain updates that pretty much wont help you, sometimes it will, but pretty much go by the saying if it aint broke, dont fix it. meaning if he wasn't having problems with it to begin with, USUALLY a flash wont improve performance (some occasions it will by opening up new choices, but read the bios release first!)
If you argue with an idiot he will drag you down to his level and beat you with experience.
I am not a fast writer.
I am not a slow writer.
I am a half-fast writer.