The most common Garmin problems and how to fix them
How to do a hard reset on GARMIN Fenix 3? - HardReset.info
My Fenix 5 has this screen issue because static electricity. Happened two months ago folding clothes out of the dryer and yesterday again with some heavy blanket. Soft reset and hard reset
Hard Reset GARMIN Fenix 5 Performer – Wipe Date / Restore Defaults - YouTube