Ok so I bought the game through Steam. I'm running ARMA 2: OA version 1.62.100296 (not beta). I launch through the Commander. It makes no diference how I launch the game though, because it's been doing this since before I had the Commander. I used to launch through Six Launcher, or Steam itself. This is something that has been happening since I bought ARMA 2: CO, around six months ago. I can play for hours, or for minutes but my game, PC, or video card will just crash. Often times artifacts appear as my screen freezes, and I have to hard restart my computer with a button. Alternatives like my screen turning black have ocurred. Sometimes I can alt-tab out of it but usually I can't. It's not a GPU/CPU heat issue, my drivers are up to date, and the average FPS is 60. Specs: -Intel i5-2500k @ 3.30 GHz -8 GB RAM -2 EVGA GeForce 560's in SLI -1920x1080;60 screen Operating System: -Windows 8 Pro 64-bit -Windows 7 Ultimate 64-bit