Adding and Replacing Parts 15112Adding 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" on page 151and "Before Working Inside Your Computer" on page 152.• You have read the safety information in the 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• Small Phillips screwdriver• Small plastic scribeTurning Off Your ComputerNOTICE: To avoid losing data, save and close all open files and exit all openprograms before you turn off your computer.1 Shut down the operating system:a Save and close all open files and exit all open programs.b In the Microsoft® Windows® XP operating system, click Start→ ShutDown→ Shut down.
