Hello guys I just recently upgraded to windows 8 from windows 7. I keep all of my games installed on a secondary hard drive. When I set this new machine up and tried to run some of those games its giving me errors and saying to reinstall the games. Diablo III is the only one to work so far. When I use to do the same thing reinstalling windows 7 they would work just fine. I guess it because the change of operating system.