How To Hard Restart A Nintendo Switch. To do this. Your console should boot up without any issue.

Hold down the volume up and volume down buttons along with the Power button to start the maintenance mode. How to hard reset Nintendo Switch. The Nintendo Switch will now restart itself.
Select Power Options from the list and select restart.
Go to the System Settings menu. The Nintendo Switch actually offers more than one way to reset or initialize its firmware potentially sparing your save data if you choose. So if you plan to fully wipe your data from Nintendo Switch then you can perform a hard reset on your Nintendo Switch. Press and hold the Power Volume Up as well as Volume Down buttons for a while to enter the Maintenance Mode.

