There are two resets that can be performed if you are having issues with an Garmin Approach not functioning as expected. A soft reset used when the Approach is unresponsive or will not power on or off. You need to visit our website to get the proper solution on it:
https://www.garminsmapupdates.com/setup-resetup-garmin/
https://www.garminsmapupdates.com/setup-resetup-garmin/