In order to remove it from your computer, go to C:\Program Files and check the CyberLink YouCam folder to see if it includes an uninstaller. If not, 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.