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Before You Begin 9
Before You Begin
Turn Off Your Computer and Connected Devices
CAUTION: To avoid losing data, save and close all open files and exit all open
programs before you turn off your computer.
1
Save and close all open files and exit all open programs.
2
Click
Start
and click
Shut Down
.
Microsoft Windows shuts down and then the computer turns off.
NOTE: If you are using a different operating system, see the documentation of
your operating system for shut-down instructions.
3
Disconnect your computer and all attached devices from their
electrical outlets.
4
Disconnect all telephone cables, network cables, and attached devices
from your computer.
5
Press and hold the power button, while the computer is unplugged, to
ground the system board.
Safety Instructions
Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
WARNING: Before working inside your computer, read the safety information
that shipped with your computer. For additional safety best practices information,
see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
WARNING: Disconnect all power sources before opening the computer cover or
panels. After you finish working inside the computer, replace all covers, panels,
and screws before connecting to the power source.
CAUTION: To avoid damaging the computer, ensure that the work surface is flat
and clean.
CAUTION: To avoid damaging the components and cards, handle them by their
edges and avoid touching pins and contacts.
book.book Page 9 Tuesday, April 17, 2012 11:37 AM