For WOW! tv+: In order to restart your WOW! tv+ box, go to Settings (the ‘gear’ icon from the home page), select “Device Preferences,” and then select “Reboot.” Please do NOT select “reset”. If you select “reset” you will factory reset your box and lose any 3rd party apps from the Google Play store and any previously stored personal settings.
For WOW! Original and ULTRA TV: Simply unplug the power cable from the rear of the set-top box and plug it back in.