When I install or uninstall games and programs and such, the computer locks itself and I must do a hard reset to get going again. I've tried some games, some programs and it's all the same. An empty window is opened and then everything locks up. It started when I installed Battlefield Heroes, but now it's gone from the system and I've done some registry repairs and the problem is still there. I have no idea what to do now. Thanks for looking!