Turning off the Screen
Using power button
Press the Power button 
to turn off the screen.
Using Charms
1.Swipe from the right edge of the display to access the Charms bar.
2.Touch Settings 
→ Power 
→ Sleep to turn off the screen.
NOTE: If your tablet is in a sleep state, press the Power button 
or Windows button 
once to turn on the screen.
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