Video card problem perhaps?

About a week ago I decided to Bring my sony Vaio up to speed so it can be used as a major gaming computer. I went out and bought a Geforce 6600 Which works fine on games, plays them nice and smooth...

But when Im playing the game (mostly WOW) It will random freeze on me for a bit and then go back...or It will just restart my whole computer at times as well.. Usually restarts it more then anything else and it mostly happens when Im in battle in the game.

I have a Gig of Ram on this computer as well so I dont think that the problem....I havn't been able to figure this issue out so if anyone out there has any idea about what going on and how I can go about fixing it I will be greatly in your debt ^_^.


If you need more of my computer specs just ask and I shall supply them to you. thanks in advanced.

Jam it back in, in the dark.