So today I wanted to install Forza 6 but realized I needed the latest version of Windows 10. So I updated it and now my computer thinks it doesn't have a GPU (it doesn't detect it). I tried reinstalling the nvidia drivers but they keep failing. And because of this, my speakers and my 2nd monitor don't work. Also, it freezes constantly while trying to restart/shut down and sometimes it doesn't even boot up correctly. What should I do?