Ive been following your pc threads, sometimes its easier just to call it quits, back up all your stuff to another drive, or usb flash drives etc and then reinstall windows, it will be like a new pc then.
For me that would be easier as ive done reinstalls loads of times so i can do it blindfolded
Not saying thats the correct way of sorting the pc, but sometimes rather than try to sort individual issues out its easier to do the re installation and fix everything in one hit