Ok so i am having following problem.. When I try to play a game it suddenly freezes. It stops and plays a sound repeated very fast like if the cd is scratched for a few seconds. I can't do anything when it freezes,I have to reset it every time when it happens. So this happens between 2 and 20 minutes after starting a game, often very early. It ONLY happens in games, not in normal applications. And it happens with few games only (e.g. age of empires 3, perfect world) I know problem is in my graphic card because when i remove my card and play the game it works excellent.I am using Nvidia GeForce 8400 GS. any1 can help me out please????