Whenever I try to launch a game like Batman:Arkham City(Steam), Borderlands(Steam), GTA San Andreas(Gamefly), Fable 3(Steam), and even the HP Games app, my computer freezes, forcing me to turn it off improperly. This all happened last thursday. Before this, I could play these games without that problem. What's weird is that I can play games like Bioshock, Dead Space, and Team Fortress 2 without this problem. I have an HP G62-340US notebook running Windows 7 64-bit and 8 GB of RAM. I know the graphics card for this comp is old, but I never had a problem with it. I have to add that I am not very tech-savvy, so be gentle.