Before You Begin | 7Before You BeginTurn Off Your Computer and Connected Devices CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer.1Save and close all open files and exit all open programs.2Follow the instructions to shut down your computer based on the operating system installed on your computer.•Windows 8: Move your mouse pointer to the upper-righ t or lower-right corner of the screen to open the Charms sidebar, and then click ...