I need help diagnosing a computer problem... I don't want to send it to the shop for diagnosing since it costs and I've run out of warranty.
Basically, what happens is that a few minutes into pretty much any game that uses DirectX, the computer crashes. First my screen turns black and tries to toggle between digital and analog inputs for a few seconds, which I think means that it's still getting something, but can't make a picture out of it. Then, sound (which continues for a few seconds) starts looping very quickly (I'd say 5 times a second at least), and the computer freezes completely. In the few seconds after the screen turns black, I can see that the computer's still working because the G15 screen still works - I can switch between apps. After sound starts looping, the G15 screen is frozen the way it was, I can't numlock, caps lock etc. and the entire computer is frozen. And then I restart.
Sounds like a GPU problem, right?
I have an old GPU that I wanted to use temporarily, just to test, but there are no drivers for it on Windows 7. Is it safe to use Vista drivers, or should I give up on that?
(PS, in case anyone cares, my current card is ATi Radeon HD 4850 and the old card is nvidia GeForce FX 5200)