first what power your game need to work?
two: do you get a error message when the game crash?
three: the virus story is old and its never that since your com never find any virus and there are no know virus that will cause all games and only games to crash.
four: old game would not be afected by drivers.
the problem might be a memory problem, there not many thing that might be the cause all games to crash to desktop, i don't see what might be the problem in your com.