If holding the Power button for a few seconds doesn’t turn it on, also press and hold Volume Down for 15 seconds What to Know Most Samsung Galaxy tablets are turned on by holding the Power button for at least three seconds. To force restart the tablet, hold Power + Volume Down for about 15 seconds. If your tablet won’t turn on, won’t hold a charge, and won’t respond to any force restart method, it likely requires repair. This article explains how to turn on a Samsung Galaxy tablet and what to do if the typical steps don’t work. How…