how do I clean install flash player

I keep getting this error when I try to run xsplit on my computer, and I have come to the conclusion that the version of flash that was pre-installed on this computer has become corrupt.  I had two blue-screens earlier today while working on a large photoshop CC project, I believe that's when it started.

I tried this How do I do a clean install of Flash Player? but no gravy.

Is it wrong of me to want to be able to uninstall a program on a computer that I own without having to get permission?