What solved it for me, im unsure my self. but it did work witch one made it work im unsure.
Only thing i can think off is MS keeps files, on Disk even tho they look empty,
So changing motherboards, tell mS my software is not gen.
read though post, probley 2 pages back, sorry can not do the work for you ill atm.
Hope you can find what you looking for, Its a lot of stress trust me. But if you got gen windows 8.
And still stuck ring MS. im sure they will help.