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Before Working Inside Your Computer
Before You Begin
CAUTION: To avoid data loss, save and close all open files and exit all open programs before turning off your computer.
1Save and close all open files and exit all open programs.
2Move your mouse pointer to the
NOTE: If you are using a different operating system, see the documentation of your operating system for
3After the computer shuts down, disconnect it from the electrical outlet.
4Disconnect all cables — such as power and USB cables — from your computer.
5Disconnect all peripherals connected to your computer.
Recommended Tools
The procedures in this document require the following tools:
•Phillips screwdriver
•Plastic scribe
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