Oh wow, no wonder
I found out how to fix the start menu..
After a couple of restarts, the right clicks started working so I was able to run PowerShell as administrator. (Right click start button,...

I installed Windows 10 using windows update from Windows 8.1.
I now have so many issues with windows 10 that I would gladly downgrade back to 8.1 but I have too many files that I will lose.
Any...