Read this tutorial and then attach sfcdetails.txt to your next post: System File Checker - SFC _SCANNOW Command
Revo Uninstaller Pro will not require you to edit the registry.
Revo Uninstaller Pro will edit the registry for you as long as you choose the option for such.
The use of Revo Uninstaller Pro is not essential. You can let microsoft uninstall for you.
Control Panel | Programs and Features | scroll to the program that you want to delete | right-click on the program and choose uninstall
Did you run the Update Readiness Tool? Yes or No?