If the program is nowhere to be found on the Add/Remove Programs list then you will need to use an advanced utility which deals with this problem. You can use Your Uninstaller! because it has an advanced uninstallation menu from where you can search for lost or broken uninstallers on your computer.
After you install the application, please click on Advanced Uninstall and locate your software on the list and click remove and let the application do its job.
