CptJS

I imagine it is the same as windows 7. Just go into the CK II folder, then go into the folder in it that says mod. In it there should be 2 files that say Uninst0, double click on the one with the red circle with a white X in it, it should be the last thing in the file, then uninstall will commence. I will say this, if your trying to uninstall it then re-install it, I tried that already to try to get it to work after the Old Gods Patch, and it didn`t work, sorry :/