Re: opteron 148 or 64 3500 ????
its just a jumper on the motherboard, read the motherboard manual and it will tell you where it is and what to do
EDIT: oh and what it does is reset the bios so all the changes u made are erased and its put back to default, the reason i know this is because ive had to do it a few times myself
ASUS P6X58D premium | i7 920 D0 @ 4.2GHz | Corsair XMS3 6GB | MSI GTX460 HAWK | OCZ vertex 2 SSD | Coolermaster HAF X case