a firend of mine just drop his pc around for me to fix, he said that the bios has gone, so i booted it up and get the bad bios chucksom error message, i'm read the manule and that said used the motherboard cd to recover the bios, i tryed this , got the bios back and it hung, or i reset it and i get teh bad bios eooro again, is this a new bios chip or replacement mainboard time ?
Try replacing the battery (cr2032) then resetting the CMOS with the jumper, and loading the defaults.
Don't newer ASUS boards allow to load bios flasher from dvd when this happens, did for me, saved my mobo!