I noticed some had a problem in the past with the start menu not working. I just had that problem and came across something that worked. It even got my Cortana to work after not having it respond at all.
Just open up powershell and run as admin. Type in the command below:
I am sure it would be worth trying. It seems that there are a few different commands for fixing the start button. What works for one may not work for somebody else.