When you want to uninstall the Service you must perform two steps.
First Launch the Executive and Stop the Service.
Next Click on the "Remove Button". This will tell Windows not to try to start the service anymore.
Once the Service has been removed from Windows, Go to the Start Menu and click on
Program Files/SupportWindows/Service/uninstall SupportWindows Service
This will finish the uninstallation and remove all the SupportWindow Service files from your computer.