Dell Dimension E521 - Manual (Page 61)

Removing and Installing Parts
61
Removing and Installing Parts
Before You Begin
This 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 and Before Working Inside Your
Computer.
• You have read the safety information in your Dell™ Product Information Guide.
• A component can be replaced or—if purchased separately—installed by performing the removal
procedure in reverse order.
Recommended Tools
The procedures in this document may require the following tools:
• Small flat-blade screwdriver
• Phillips screwdriver
• Flash BIOS executable update program on support.dell.com.
Turning Off Your Computer
NOTICE:
To avoid losing data, save and close any open files and exit any open programs 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 Start button, 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 process finishes.
2 Ensure that the computer and any attached devices are turned off. If your computer and attached
devices did not automatically turn off when you shut down your operating system, press and hold
the power button for 4 seconds.
book.book Page 61 Monday, July 23, 2007 3:47 PM