Did you clear the CMOS properly? It will take longer than usual to clear the CMOS on this board, so leave it for about half an hour just to be safe, although I've heard of reports that it takes as little as 5 minutes. I've never had to clear my CMOS, so I can't comment.
Did you put the CMOS jumper back before you started up your machine? If not, you may have messed up your board, in which case yes; call Asus support. You may need a replacement board.
I'm talking a lot of theory here; like I said I've had no problems with the board since I built my comp on the 24th