Built new rig for a friend last night using a Zalman Z11plus case along with a Hyper 212 cooler, Asusz77 motherboard, i5, gtx660. We left the the side off during the build and no issues, and my friend also played wow for 2 hours this morning no issues. Then he put the side on and was getting random black screens and reset. Could the hyper 212 be touching the case and causing an issue? I asked him to test with the side off and no issues again with it on it will black screen within 10 minutes.