I recently just got a BIOS Checksum Error while trying to boot up, It wouldn't go away and got stuck in a loop. I opened up my rig and decided to see if it was my RAM as i felt the RAM could be causing some BSOD's aswell. Turns out that with both sticks in (DDR2 2gb Corsair DOMINATOR) It just cannot boot, I left one in and it still didn't get out of the loop. Though when i swapped them around it got past the loop and booted up with no problems. So far no BSODs or problems though I'm terrified to turn off the computer. The question is, The odds are that the stick that isn't being used now is faulty and causing all my problems? or something is wrong with the BIOS? Any advice/help would be great, Cheers again.