Adding and Replacing Parts 107Adding and Replacing PartsBefore You BeginThis chapter provides procedures for removing and installing the components in your computer.Unless otherwise noted, each procedure assumes that the following conditions exist:• You have performed the steps in "Turning Off Your Computer" on page 107 and "Before WorkingInside Your Computer" on page 107.• You have read the safety information in your Dell™ Product Information Guide.Recommended ToolsThe procedures in this document may require the following tools:• Small flat-blade screwdriver• Phillips screwdriver• Small plastic scribe• Flash BIOS update program (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 open programs before you turn offyour computer.1 Shut down the operating system:a Save and close any open files, exit any open programs, and click Start→Shut Down.b Select Shut down→OK.The computer turns off after the operating system shutdown process finishes.2 Ensure that the computer and any attached devices are turned off. If your computer and attacheddevices did not automatically turn off when you shut down your operating system, turn them offnow by pressing and holding the power button for 4 seconds.Before Working Inside Your ComputerUse the following safety guidelines to help protect your computer from potential damage and tohelp ensure your own personal safety.
