1.To turn off your tablet using power button:
a)Press and hold the Power button 
until you see “Slide to shut down your PC” on the screen.
b) Slide to shut down your tablet.
NOTE: You can also turn off your tablet without sliding down the screen. Press and hold the
Power button for >10 seconds to turn off your tablet. You can perform this force shutdown, if your tablet is not responding / behaving unexpectedly or touch is not working.
2.To turn off your tablet using the charms menu:
a)Swipe from the right edge of the display to access the Charms menu.
b)Touch Settings 
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