Before Working Inside Your Computer | 7Before Working Inside Your ComputerBefore You BeginCAUTION: To avoid data loss, save and close all open files and exit all openprograms before turning off your computer.1 Save and close all open files and exit all open programs.2 Move your mouse pointer to the upper-right or lower-right corner of the screen toopen the Charms sidebar and then click Settings→ Power→ Shut down.NOTE: If you are using a different operating system, see the documentation ofyour operating system for shut-down instructions.3 After the computer shuts down, disconnect it from the electrical outlet.4 Disconnect all cables — such as power and USB cables — from your computer.5 Disconnect all peripherals connected to your computer.Recommended ToolsThe procedures in this document require the following tools:• Phillips screwdriver• Plastic scribe