1. Click the Start menu, choose Select "System" after "Settings", go to Settings;
2, open the system to select "Power and sleep", and on the right select "Other power options";
3, open the "Power Options" to find "change the power button function" (this is the same and win8.1);
4. After entering, click on the top "Change Settings is currently unavailable";
5, and then in the bottom of the window, "set off" in the first uncheck "Enable Quick Start (recommended)", click "Save changes" button.
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