Associate
Bit of a stab in the dark and may sound like an odd suggestion, but open up Task Manager, go to the Services tab and see if the Tablet Input Service is running. If so, turn it off -- I can't remember the specifics, but it unloads some sort of driver that a lot of games use (something sound-related if I recall) after about 10 minutes of them launching. Some games are fine, but others just go boom.