Many have faced this problem. There is no complete solution yet. That the computer has stopped constantly rebooting, it needs to be reset to factory settings. To do this, turn off the bike computer, then press and hold the workout start and new lap buttons, while continuing to hold these buttons, press the power button and as soon as the Garmin logo disappears, release the workout start and new lap buttons.
If, after resetting the settings, the computer restarts when using maps, you will have to remove third-party maps, or roll back to software version 7.1.
But as I wrote earlier, this does not completely solve the problem. For example, if you go to the training history and see the trajectory of your movement, then go to the navigation, when you open the map, the computer will restart. It looks like a hardware problem.
