?? Not sure what the problem is??

[hatguy22367]

I bought this laptop a few months ago. I have it propped up so air flow is not an issue. Every time I play a game 10 minutes into the game the screen will pinstripe or go black. I can still hear the computer running but can't do anything until I restart it then the same things happens. I'm wondering if my hard drive is failing or I fried my vid. card