The reason I did not suggest a repair install is with all his strange problems I didn't feel confident that the problem was solely the fault of the OS, but rather possibly could have been a condition on the computer before the upgrade which would still be there after a repair install. A repair install would be something else he could try, but if that proved to be the case, he would still end up having to do a clean install to fix it. A repair install is the exact same thing as an upgrade, except it's done using an iso rather than through windows update. That said, the OP has asked for help with a number of problems to which several of us have offered our opinions and suggestions. Yet he had not given us any indication he has tried any of them other than turning off fast startup which he seemed unhappy about having to do.
