When i originally built the system, there was no issues at all and everything ran fine. About 2 weeks ago, my system abruptly shut down and refused to show anything to the monitor. I tested a older card (PNY 9800GT) and picture was restored the monitor. So i RMA'd the card that wasnt working and just got it back today. Same issue. Everything but the card powers on when i install it, but with the 9800GT it is fine. Would the PSU be causing this issue?