Hello folks I'm having a puzzling problem after upgrading to Windows 7 from Vista (clean install). Certain games are now completely shutting down the computer. The games in question are Dragon Age Origins and The Sims 3. Both of these games ran with no problems in Vista but now after about 5 or so minutes of playing my system completely powers off, no blue screens or anything. I've tried reinstalling video drivers and running the games in administrator mode with no changes. I don't think this is a heating issue seeing as my computer ran the games in Vista with no problems. Other games seem to be fine even after long game play and even minimized with other programs running. Any ideas what's going on here? Suggestions? Thanks for any help.