If you can't uninstall it using a standard procedure (its uninstaller or Add or Remove Programs feature), I suggest you remove it 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.
Also, as an alternative, you can run the Uninstaller provided by Panda Security. If you can't use the USB port after the process is finished, go to Start > Control Panel> Hardware and Sound > Device Manager, expand the Universal Serial Bus controllers, right click the USB driver and select Uninstall. After that, reboot the PC and press the Scan for hardware changes icon from Device Manager. Windows should automatically find and install the USB drivers.