Dell OptiPlex 755 - Manual (Page 13)

Quick Reference Guide
13
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" on page 13
and "Mini Tower Computer" on page 16.
• You have read the safety information in your Dell™ Product Information
Guide.
• A component can be replaced 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 update program floppy disk or CD
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 the Microsoft
®
Windows Vista™ operating system, click the
Windows Vista Start Button , in the lower-left corner of the
desktop, click the arrow in the lower-right corner of the Start menu as
shown below, and then click Shut Down.
The computer turns off after the operating system shutdown process is
complete.