Lenovo YOGA 900S-12ISK User Manual page 22

Chapter 2. Starting to use Windows 10
Shutting down the computer

If you are not going to use your computer for a long time, shut it down.
To shut down your computer, do one of the following:
• Select the Start button, then select Power
• Right-click or press the Start button in the lower-left corner and select Shut
down or sign out  Shut down.
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 Shut down.