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Before You Begin
This manual provides procedures for removing and installing components in your computer. Before you begin any procedure in this book, ensure that:
•You have performed the steps in "Turning Off Your Computer" on page 9 and "Before Working Inside Your Computer" on page 10.
•You have read the safety information that shipped with your computer.
•A component can be replaced
Recommended Tools
The procedures in this document may require the following tools:
•Small
•Phillips screwdriver
•Plastic scribe
•BIOS executable update program available at support.dell.com
Turning Off Your Computer
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.
2Click Start 
and then click Shut Down.
The computer turns off after the operating system shutdown process is completed.
3Ensure that the computer is turned off. If your computer did not automatically turn off when you shut down the operating system, press and hold the power button until the computer turns off.
Before You Begin
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