It won't boot, during POST it makes 8 beeps, which means "VGA error" according to the booklet. The graphics card is a GeForce 560 which works fine in another computer. I tried the GeForce 9600 from that other computer, won't work either with this motherboard.
I sent the motherboard back to the seller for a replacement, got the replacement, I get the exact same error.
I know the graphics cards are fine. I checked the extra power connectors that go to the cards, they do receive power. I reseated the cards, tried the other PCI Express connector, same result.
I'm not sure what else I could try.