I have a geforce 7900 GS, spec's are 2 gigs of ram, AMD 4600, VISTA 32 bit. It always worked, played oblivion and half life. Then I just stopped playing video games, and one day I came home...and my computer screen was pixelated, all multicolored...it overheated some how...when I wasn't even on the computer. Took the card out, let it cool down, put it back in, and it worked fine (didn't try any games). Then a few days later the same thing happened...but it DIDN'T work again. After trying to clean it, I put it back in...and I get a black screen when I boot up. I hear all the sounds, just no video. Is my card fried? Or is the connection just bad?