Ok I'm trying to upgrade the ram in my sister's computer. I'm putting in OCZ Gold 2x1gb ddr2 800 and I can't get them both to work. I can put either one in and it will work fine but it won't work with both at the same time. However I can put 1x1gb + the original 1x512mb and it will work fine. When I put both OCZ ram in the computer it will power on but the computer will not send the signal to the monitor and the fans stay at full speed (normally they ramp down 5 seconds after powered on). Anyone have a idea of whats wrong?