Before working inside your computer
- Save and close all open files and exit all open applications.
- Shut down your computer. Click
.
NOTE If you are using a different operating system, see the documentation of your operating system for shut-down instructions.
- Disconnect your computer and all attached devices from their electrical outlets.
- Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.
- Remove any media card and optical disc from your computer, if applicable.
- After the computer is unplugged, press and hold the power button for 5 seconds to ground the system board.
CAUTION Place the computer on a flat, soft, and clean surface to avoid scratches on the display.
- Place the computer face down.
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