If the application refuses to uninstall using its own uninstaller then you will need to get help from another utility which uses advanced techniques in order to remove remains or faulty programs. For that operation I strongly recommend Your Uninstaller!. It has the ability to bypass uninstaller restrictions to remove it completely from the computer, registry, program files folder, etc. Install it, right click the faulty application and use Advanced Uninstall. Follow the on-screen instructions and the application will be removed from the list of applications and computer.