Ok, so this is very specific, but I've figured out the exact combination of buttons that I press that minimize my games. When I press A and S and also move my mouse to the right and click, my game minimizes. It sounds like I could avoid that, but I really can't, because I use WASD to move, and I move my mouse a lot. It's so random, and I need it to stop because I play Counter Strike competitively, and it messes me up a lot. I'm running Windows 8, by the way. Thanks.