Ive built a custom machine very nice and expensive but when I had it shipped back from japan to back in the states it came with a problem. It worked fine in japan when I used it. But when I got it back the video card had fallen out of it so I put it back in and started up the machine after checking all the wires and made sure nothing was broken. Everything seemed fine. When I started it I got no video output, but when you remove the video cable the screen says check signal cable. I tried multiple sli xpress slots and multiple video cards and everything was the same. Tested the power supply and getting the 12volts going to the video card. And fan works on video card. Now im just wondering could this be a bad motherboard or is there something else im missing here. And yes monitor works fine have it plugged up to another computer right now and working great. Any help would be great.