DELL NT499 ユーザーズマニュアル

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Adding and Replacing Parts
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Adding and Replacing 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 read the safety information in the 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
Small Phillips screwdriver
Small plastic scribe
Flash BIOS update program
Turning Off Your Computer
 
NOTICE: 
To avoid losing data, save and close all open files and exit all open 
programs 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
→ Shut 
Down
→ Shut down.
In Microsoft Windows Vista™, click the Windows Vista Start button 
 in the lower-left corner of the desktop, click the arrow in the