Since the issue happens only while playing games, I suspect your laptop is overheating.
I would like to assume that as well but my laptop is always cool to the touch, it only gets a bit warm where the video card is located. I have a friend with an HP laptop with a 5850 that has less ventilation and runs extremely hot and hasn't experienced any of the errors I'm getting. Mine can happen within 10 minutes of play or 3 hours, it seems random. You would think an over heating issue would be somewhat consistent?
take a look at the ventilation on this notebook, it's much better than an average notebook;http://usa.asus.com/product.aspx?P_ID=8je5Ot4HBnKOdT81
Since the laptop is only 3 months old, we can't really monkey around too much.
Your best option is to call laptop's manufacturer and take advantage of your warranty.
It shouldn't be happening to almost new computer.
This is what I'd like to do, but I start schooling in animation tomorrow which requires me to have my laptop 24/7 so I'm in a bit of a bind and can't afford to send it off.
Edited by Peregrina, 27 March 2011 - 01:51 PM.