Just built a computer, i have bought this graphics card, and i am getting no signal from either of the ports on the back. my motherboard is a p45 with a core 2 (e8400 i think), 4gb of ram.
the graphics card is recieving power by both slots, 2 6-pin pcie. one of which is an adapter from two 4-pin molexs. 500w.
monitor and cable are good, im using it on annother computer now.
checked that it is fitted correctly to the motherboard.