So 2 days ago I downloaded Metro 2033 from Steam, and when I loaded it up, got an error message saying that I'm missing NVIDA Physx drivers (My graphics card is a Radeon 6850). So I download the NVIDIA Physx System Software Package from their website and start playing Metro and the game runs fine for about an hour, then something happened that's never happened to me before. My monitor went blank, flashed "No Signal," and stayed that way despite the fact that my PC was still powered up and apparently running. I couldn't do anything except a hard reset.
Now, 2 days later, every time I load up a game my monitor loses signal after anywhere from 5-30 minutes of gaming. Sure seems like a driver issue, given the way this problem came about, right? Well, I ran Driver Sweeper to clean out all the NVIDIA drivers from my system (ran it twice), downloaded the latest AMD Catalyst package, deleted Metro 2033, and STILL my monitor is losing connection, but only when gaming! I've been gaming daily on this machine and everything has been running fine until I downloaded Metro 2033 and Physx. Any suggestions?