Adding and Replacing Parts 8911Adding and Replacing PartsBefore You BeginThis chapter provides procedures for removing and installing the componentsin your computer. Unless otherwise noted, each procedure assumes that thefollowing conditions exist:• You have performed the steps in "Turning Off Your Computer" (see"Turning Off Your Computer" on page 89) and "Before Working InsideYour Computer" (see "Before Working Inside Your Computer" on page 90).• You have read the safety information in your Dell™ Product InformationGuide.• A component can be replaced or—if purchased separately—installed byperforming the removal procedure in reverse order.Recommended ToolsThe procedures in this document may require the following tools:• Small flat-blade screwdriver• Phillips screwdriver• Small plastic scribe• Flash BIOS update (see the Dell Support website at support.dell.com)Turning Off Your ComputerNOTICE: To avoid losing data, save and close any open files and exit any openprograms before you turn off your computer.1 Shut down the operating system:a Save and close any open files, exit any open programs, click the Startbutton, and then click Turn Off Computer.b In the Turn off computer window, click Turn off.The computer turns off after the operating system shutdown processfinishes.
