Dell Dimension C521 User Manual

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Dell™ Dimension™ C521
Owner’s Manual
FlexBay for optional
floppy drive or Media
Card Reader
hard drive activity light
power button
microphone connector
CD or DVD activity light
CD or DVD eject button
diagnostic lights
USB 2.0 connectors (2)
Service Tag
headphone connector
power connector
USB 2.0 connectors (4)
VGA video connector (integrated)
network adapter
audio connectors
card slots for
PCI (1),
PCI Express x1 (1)
PCI Express x16 (1)
cover release latch
Model DCNE

Dell Dimension C521 Specifications

General

Brand	Dell
Model	Dimension C521
Category	Desktop
Language	English

Summary

2 Solving Problems

Lockups and Software Problems

Addresses computer freezes, unresponsiveness, and software crashes.

3 Advanced Troubleshooting

Power Light and Diagnostic Lights

Explains the meaning of power and diagnostic lights for troubleshooting.

Dell Diagnostics

Restoring Your Operating System

1 Setting Up and Using Your Computer

Connecting to the Internet

Power Management

4 Removing and Installing Parts

Before You Begin

Removing the Computer Cover

Installing Memory

Step-by-step guide for installing or upgrading memory modules.

Installing a Hard Drive

Step-by-step guide for installing a hard drive.

Replacing the Battery

Step-by-step guide for replacing the coin-cell battery.

Clearing Forgotten Passwords and CMOS Settings

Clearing Password Settings

Steps to clear forgotten system passwords using jumpers.

Cleaning Your Computer

Contacting Dell