Try using Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.
Since this is a browser add-on (adware), AdwCleaner will take care of it. Just make sure that after the Scan operation, the add-on remains checked at all times. Reboot the computer and it should be removed from your computer.
