Problems installing Visual Studio 2015 Community

You have a way to force uninstall Visual Studio 2015, I'll show you how I proceeded some time ago when I had exactly the same problem:

C:\vs_ultimate.exe /uninstall /force

Run this command on your CMD . Warning that in my case this was the directory, it was located on the C: disk and I was using the Ultimate version.

You will have to put the board that corresponds to yours.

This in principle is due to the fact that you have your windows corrupted. Use the sfc / scannow command in cmd to report the system files and finally make a chkdsk to your c:

sfc /scannow