I officially hate Windows10. Just installed 8.1 again because Windows 10 went in "crazy mode" and deleted my activation. I tried re-activating with no success, so I reinstalled 8.1 and I don't want more Windows 10.
So far I've installed the updated onto 12 computers with one being a clean install. No issues other than a gpu update turning off my second screen.
Oh well. It's a shame that you're not willing to try again as who knows what's on your machine! Did you change any hardware? More retail would be nice otherwise your post doesn't really mean anything.
I don't had any problems with hardware and drivers, everything's worked perfectly but today I don't know why I lost my Window 10 activation. So I tried to reactivate but not worked. And reinstalled Windows 8.1 and with 8.1 everything's perfect. So I stay with it.