My cMP has a GTX 980 in it. Everything was running really well, but today I went to reboot and all of a sudden got no display. I tried everything I could think of, PRAM reset, SMC reset, booting to recovery - nothing. There is just no display at all. I tried testing it with another GPU that doesn't need the 6 pin connectors and the system boots. Is it possible that the 6 pin connectors plugged into the main board went bad? I can't really think of any other reason I would get no display but it would work with a cheap GPU that doesn't need the 6 pin power. Anyone have any ideas?