I've got a computer that's maybe six months old, if that, using a single ASUS GeForce 580 GTX direct CU II video card and now it crashes either to a reboot or just a straight black screen with the last sound repeating over and over or a general growl from the speakers. I downloaded new drivers from nVidia a couple of months, when Skyrim was giving me some general crashes but I was still able to get 4 hours in at a stretch. These crashes only ever happen when I'm playing a game with 3D models in it (Audiosurf, Beat Hazard, and Bejeweled 3 don't ever crash it) but the time to each crash isn't always consistent. I thought it could be my video card overheating but the inconsistencies in time makes me think maybe that's not it, and both fans appear to be running fine. As an example here are the times I've gotten recently: Skyrim = 5-10 minutes (although fog and haze seem to have always affected it) Portal 2 = 1 hour last week and 5 minutes the last time I played Bionic Commando Rearmed = 10 minutes and finally: Batman Arkham City = 1 hour 30 minutes (before I got bored and kicked it into the benchmark program) The Arkham City benchmarker ran all the way through to the end but then I couldn't exit out of it. It gave me an option to hit esc to exit but that didn't respond, but the snow kept falling over the city. I figured if anything would get the card to crash the system right away it would be Arkham City, because the graphic settings are as high as they will go and PhysX settings are only one notch below full , and all of that processing is hitting the 580 GTX I don't have any secondary PhysX processor setup and, with exception of BC:R, the other games don't use PhysX. Could this just be a driver issue or do you guys think my video card is just overheating?