It cant be that. My 8600GT runs jsut fine with XP and the video drivers they put out. I still think it is a driver issue. Did you try using Driver Cleaner Pro?
I mean i am using the sam set of drivers since the drivers are for the 8 Series card which i have also. So i dont see why it would work for me and not for you.
Yeah, sorry...not too clear of a post, I agree, driver issue.
No haven't done the cleaner pro yet....just swapped in the 7300gt for now. I don't know if driver cleaner pro will help, I had the problem with both the 9800gt and the 9800gtx before and after the fresh reformat. Once I get my folding rig up and running (just installing programs now) I switch over to it and then run driver cleaner pro. If that doesn't work I'm going with a new reformat with a bare rig and see if it works with just the HDD, GPU, RAM, cpu and mobo. Then start adding the peripherals one at a time and see if it's one of them that is messing up the drivers compatibility.
Sound like a plan?