I'm having a problem with my game starting after awhile. I can run it and play, then shut down up to 4 times. On the next attempt, the disk will spin up, Bon Voyage will be listed in the task manager, then the disk will spin down.
Your specs sound OK. Do you mean that
you shut down your game up to 4 times, or that the game crashes/shuts down on its own. If you are repeatedly shutting down your game and restarting, there may be a memory problem (RAM may not clear properly and the next time you start the game there are fewer resources available each time - this appears to happen in my system as well). Log out of your account and re-login and this should solve it.
If the situation is that the game crashes on its own, it could be overheating (sounds about right), or possibly some strange CC borking things (although the fact that it seems to run for a while seems to make this less likely). As regards overheating, you also want to check to make sure your cooling fans are all working properly.
I'm assuming you close non-essential processes from the Task List before you play.