hes not the only one with same problem, ive done exactly same.
Fresh installs , used all fixes thats come out and still dont work.
Only thing i can think of everyone thats having problems list there system specs on a seperate post and compare ones thats are having problems with who are not.
We might be able to work out whats wrong, try too.
If i start post off can u put a sticker on it or what ever and make sure people posting what is needed to be ?
Its only way we can work out whats wrong and if anyone knows nvidia's email address we could send a email to them showing all facts we found and possible fault.