Graphics driver crashing

I built my first PC with a GT 520 and recently upgraded to a gtx 760. After this upgrade it worked and ran fine for a few months, even under high stress, but after a while the graphics drivers started to crash. The screen would freeze and then go black for a few seconds before returning to normal. This causes any game to crash.

I have already tried updating, rolling back and reinstalling drivers. I have also checked to see if everything is plugged in correctly and it is. I also emailed Asus support but they didn't give a solution.

I have no idea how to fix this problem because this is the first problem I have encountered. Any help would be appreciated.

I'd get an RMA and see if it's the card, try it in a different system to be sure tho