Trying to upgrade from Windows 8.1 to Windows 10 with Windows 10 Installation Media, and after I accept the terms & conditions I just get stuck on a loading screen that says "Getting a few things ready". It's been going for about 8 hours now. I've tried cleaning my computer, turning off my anti virus, turning off my firewalls, running the application as Administrator but I've just been stuck on the same thing for hours on end. Any help is appreciated!