I have a custom built rig with an EVGA GTX 660 card, 8gb of RAM and a 750w PSU. I have been running to an error that claims my GPU has stopped responding and has recovered. This happens almost exclusively upon exiting a video game. Some loading screens also cause it to run into this problem. I was wondering if there was a way I could definitively identify the source of the problem, so that I may replace the faulty part.