Alienware M17X10

A friend of mine is having terrible freezes and performance issues with that, it all started while playing Crysis 2 when he was getting vertical lines and fps drops from time to time and i asked him which drivers he had and it was the stock drivers so i told him to update it and he is on 12.8 now but he is unable to play games due to major FPS drops so told him to remove and clean any old drivers and install 12.10, another problem is that the Laptop freezes when he is trying to put it on sleep.

We would like to avoid any kind of formatting and re installing windows for now due to him having only 1 drive and got no external to backup on.