I have an Asus M3N78 Pro MB and an Asus EN9800GTX+ DK graphics card and a 700 watt PS. When I turn on the computer nothing happens, no beeps, nothing. It doesnt even recognize the keyboard. If I put in a regular PCI graphics card it boots up fine. I sent it back figuring it was a faulty PCI-E slot but when I got the new MB I have the same problem. Any suggestions? I also must add that I put the graphics card in another machine and it works fine so it isnt the vid card