3 of my videocards have been overheating to the point where it doesn't work anymore. This has happend all in about two weeks. I had the first video card for a while and it stopped working a few weeks ago. So I bought another one thinking it was the video card but that one stopped working too. So I bought another one and I noticed the the heatsink gets very hot. I ordered a fan for it but it was too late. And also, I used agp and pci video cards and same result. Is it possible that the motherboard is to blame? I have a crappy WinFast motherboard. I had if for a while. So is it the motherboard?