you may end up having to do what we in the tech support field call a DFFR, which is the ultimate windows reinstall.
it involves debugging the hard drive.
fdisking (partitioning) the hard drive
formating, and finaly,
reinstalling windows.
this would remove any possible software issue.
but of course you would need to do some back ups first
now i know that probably didn't mean much to you. but a more detailed explanation can be provided.
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*Lord of the Screen Shot*