I just built a system and it wont display through the gpu, but it does just fine through the mobo port for the cpu. The gpu is a 6950 that i was using earlier today on my previous build. Im not sure if the mobo has a deffective connection, or the psu was deffective.
Yeah I made sure both connections were connected, even tried to start it up without it connected and the motherboard beeped really loudly at me. Which means it can tell when it is not receiving enough power. I will try my old psu today to see if that might be it, and see if my.6950 still works.