Before You Begin; Turn Off Your Computer And Connected Devices; Safety Instructions - Dell Inspiron 3521 Owner's Manual

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 Follow the instructions to shut down your computer based on the operating system
installed on your computer.
• Windows 8:
Move your mouse pointer to the upper-right or lower-right corner of the screen to
open the Charms sidebar, and then click Settings→ Power→ Shutdown.
• Windows 7:
Click Start
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 for 5 seconds, after 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.
and click Shut down.
Before You Begin
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