Well TRILIM, I have a 5770 series but the problem I'm experiencing is not exactly the same as you but with similar consequences. I've had to borrow a friend's card cuz it's starting to get me really angry on ATI. In fact, it's now absolutely clear in my mind that I always buy Nvidia from now on. The problem I had with is tough to describe but I'll try... pixels becomes green in random position in the screen... then I can move the mouse cursor for about 20 seconds but that's it. I mean, I cannot click anywhere or do anything, I can just see my cursor move. Then, the screen completely freezes (cursor included) for about another 20 seconds. It's then that it becomes tricky, sometimes, I can never recover from that stage, the screen is frozen and I can only restart my CPU using the restart button. If not, the screen becomes becomes all black, or whatever the color, and it recovers, with the same little windows warning about the driver problem and that windows recovered... It can happen at anytime, like you, even when idle... This is sick, I payed 230$ for my card, and the problem is, it works on another machine, it's probably a compatibility problem, so the store won't take it back... I'm really pissed!!