Dell OptiPlex 755 User manual

www.dell.com | support.dell.com

Dell™ OptiPlex™ 755

Quick Reference Guide

Models DCTR, DCNE, DCSM, and DCCY

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of

your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data

and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury,

or death.

____________________

Information in this document is subject to change without notice.

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly

forbidden.

Trademarks used in this text: Dell, the DELL logo, OptiPlex, Inspiron, Dimension, Latitude, Dell

Precision, DellNet, TravelLite, OpenManage, PowerVault, Axim, PowerEdge, PowerConnect,

PowerApp, and StrikeZone are trademarks of Dell Inc.; Intel, Pentium, SpeedStep, and Celeron are

registered trademarks and Core and vPro are trademarks of Intel Corporation in the U.S and other

countries;Microsoft,MS-DOS,Windows,WindowsVista,andtheWindowsVistaStartbuttonareeither

registered trademarks or trademarks of Microsoft Corporation in the United States and/or other

countries; IBM is a registered trademark of International Business Machines Corporation; Bluetooth

is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR

isaregisteredtrademarkoftheU.S.EnvironmentalProtectionAgency.AsanENERGYSTARpartner,

Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

Other trademarks and trade names may be used in this document to refer to either the entities claiming

the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and

trade names other than its own.

Models: DCTR, DCNE, DCSM, and DCCY

July 2007 FN392 Rev. A00

Contents 3

Contents

Finding Information . . . . . . . . . . . . . . . . . . . . 5

Setting Up Your Computer . . . . . . . . . . . . . . . . 10

Set Up Your Keyboard and Mouse . . . . . . . . . 11

Set Up Your Monitor . . . . . . . . . . . . . . . . 12

Power Connections . . . . . . . . . . . . . . . . 12

Before You Begin . . . . . . . . . . . . . . . . . . . . 13

Recommended Tools . . . . . . . . . . . . . . . . 13

Turning Off Your Computer . . . . . . . . . . . . . 13

Before Working Inside Your Computer . . . . . . . 14

Mini Tower Computer . . . . . . . . . . . . . . . . . . 16

System Views . . . . . . . . . . . . . . . . . . . . 16

Removing the Computer Cover . . . . . . . . . . . 22

Inside Your Computer . . . . . . . . . . . . . . . 24

System Board Components . . . . . . . . . . . . 25

Jumper Settings . . . . . . . . . . . . . . . . . . 26

Desktop Computer . . . . . . . . . . . . . . . . . . . . 27

System Views . . . . . . . . . . . . . . . . . . . . 27

Removing the Computer Cover . . . . . . . . . . . 32

Inside Your Computer . . . . . . . . . . . . . . . 33

System Board Components . . . . . . . . . . . . 35

Jumper Settings . . . . . . . . . . . . . . . . . . 36

Small Form Factor Computer . . . . . . . . . . . . . . 37

System Views . . . . . . . . . . . . . . . . . . . . 37

Removing the Computer Cover . . . . . . . . . . . 43

4Contents

Inside Your Computer . . . . . . . . . . . . . . . . 44

System Board Components . . . . . . . . . . . . . 46

Jumper Settings . . . . . . . . . . . . . . . . . . 47

Ultra Small Form Factor Computer . . . . . . . . . . . 48

System Views . . . . . . . . . . . . . . . . . . . . 48

Removing the Computer Cover . . . . . . . . . . . 55

Inside Your Computer . . . . . . . . . . . . . . . . 56

Cable Cover (Optional) . . . . . . . . . . . . . . . 57

System Board Components . . . . . . . . . . . . . . . 59

Jumper Settings . . . . . . . . . . . . . . . . . . 60

Solving Problems . . . . . . . . . . . . . . . . . . . . 61

Dell Diagnostics . . . . . . . . . . . . . . . . . . 61

System Lights . . . . . . . . . . . . . . . . . . . . 65

Diagnostic Lights . . . . . . . . . . . . . . . . . . 66

Beep Codes . . . . . . . . . . . . . . . . . . . . . 70

Resolving Software and Hardware

Incompatibilities . . . . . . . . . . . . . . . . . . 72

Restoring Your Operating System . . . . . . . . . 73

Using Microsoft Windows System Restore . . . . 73

Using Dell™ PC Restore and Dell Factory

Image Restore . . . . . . . . . . . . . . . . . . . 75

Using the Drivers and Utilities Media . . . . . . . 78

Reinstalling Drivers and Utilities . . . . . . . . . . 79

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Quick Reference Guide 5

Finding Information

NOTE: Some features or media may be optional and may not ship with your

computer. Some features or media may not be available in certain countries.

NOTE: Additional information may ship with your computer.

What Are You Looking For? Find It Here

• A diagnostic program for my computer

• Drivers for my computer

• Desktop System Software (DSS)

Drivers and Utilities Media

NOTE: The Drivers and Utilities media may

be optional and may not ship with your

computer.

Documentation and drivers are already

installed on your computer. You can use

the media to reinstall drivers (see

"Reinstalling Drivers and Utilities" on

page 79), to run the Dell Diagnostics (see

"Dell Diagnostics" on page 61).

Readme files may be included on your

media to provide last-minute updates

about technical changes to your computer

or advanced technical-reference material

for technicians or experienced users.

NOTE: Drivers and documentation updates

can be found at support.dell.com.

6Quick Reference Guide

• How to set up my computer

• How to run the Dell Diagnostics

• Error codes and diagnostic lights

• Tools and utilities

• How to set up a printer

• How to troubleshoot and solve problems

• How to remove and install parts

Owner’s Manual

NOTE: This document may be optional and

may not ship with your computer.

NOTE: This document is available as a PDF

at support.dell.com.

• Warranty information

• Terms and Conditions (U.S. only)

• Safety instructions

• Regulatory information

• Ergonomics information

• End User License Agreement

Dell™ Product Information Guide

• How to remove and replace parts

• Specifications

• How to configure system settings

• How to troubleshoot and solve problems

Dell™ OptiPlex™ User’s Guide

Microsoft Windows Help and Support

Center

Click

Start

→

Help and

Support

→

Dell User and System

Guides

→

System Guides

Click the

User’s Guide

for your

computer.

What Are You Looking For? Find It Here

Quick Reference Guide 7

• Service Tag and Express Service Code

• Microsoft Windows License Label

Service Tag and Microsoft

Windows

License

These labels are located on your

computer.

• Use the Service Tag to identify your

computer when you use

support.dell.com

or contact support.

• Enter the Express Service Code to direct

your call when contacting support.

NOTE: As an increased security measure,

the newly designed Microsoft Windows

license label incorporates a missing portion

or "hole" to discourage removal of the label.

What Are You Looking For? Find It Here

8Quick Reference Guide

• Solutions — Troubleshooting hints and

tips, articles from technicians, and

online courses, frequently asked

questions

• Community — Online discussion with

other Dell customers

• Upgrades — Upgrade information for

components, such as memory, the hard

drive, and the operating system

• Customer Care — Contact information,

service call and order status, warranty,

and repair information

• Service and support — Service call

status and support history, service

contract, online discussions with

technical support

• Dell Technical Update Service —

Proactive e-mail notification of software

and hardware updates for your computer

• Reference — Computer documentation,

details on my computer configuration,

product specifications, and white papers

• Downloads — Certified drivers, patches,

and software updates

Dell Support Website — support.dell.com

NOTE: Select your region or business

segment to view the appropriate support

site.

• Desktop System Software (DSS)— If

you reinstall the operating system for

your computer, you should also reinstall

the DSS utility. DSS provides critical

updates for your operating system and

support for processors, optical drives,

USB devices, and so on. DSS is

necessary for correct operation of your

Dell computer. The software

automatically detects your computer

and operating system and installs the

updates appropriate for your

configuration.

To download Desktop System Software:

Go to

support.dell.com

and click

Drivers & Downloads.

Enter your Service Tag or Product Type

and Product Model, and click

Scroll to

System and Configuration

Utilities

→

Dell Notebook System

Software

and click

Download Now

Select

Drivers & Downloads

and

click

NOTE: The support.dell.com user interface

may vary depending on your selections.

What Are You Looking For? Find It Here

Quick Reference Guide 9

• How to use Windows XP

• How to work with programs and files

• How to personalize my desktop

Windows Help and Support Center

To access Windows Help and Support:

• In Windows XP, click

Start

and click

Help and Support

• In Windows Vista™, click the

Windows Vista Start button

and

click

Help and Support

Type a word or phrase that describes

your problem, and then click the arrow

icon.

Click the topic that describes your

problem.

Follow the instructions on the screen.

• How to reinstall my operating system

Operating System Media

NOTE: The Operating System media may be

optional and may not ship with your

computer.

The operating system is already installed

on your computer. To reinstall your

operating system, use the Operating

System media. See "Restoring Your

Operating System" in your User’s Guide or

Owner’s Manual.

What Are You Looking For? Find It Here

10 Quick Reference Guide

Setting Up Your Computer

CAUTION: Before performing any of the procedures in this section, follow the

safety instructions in Product Information Guide.

NOTICE: If your computer has an expansion card installed (such as a modem

card), connect the appropriate cable to the card, not to the connector on the back

panel.

NOTICE: To help allow the computer to maintain proper operating temperature,

ensure that you do not place the computer too close to a wall or other storage

compartment that might prevent air circulation around the chassis. See your

Product Information Guide for more information.

NOTE: Before you install any devices or software that did not ship with your

computer, read the documentation that came with the device or software, or

contact the vendor to verify that the device or software is compatible with your

computer and operating system.

You must complete all the steps to properly set up your computer. See the

appropriate figures that follow the instructions.

NOTICE: Do not attempt to operate a PS/2 mouse and a USB mouse simultaneously.

Connect the keyboard and mouse.

NOTICE: Do not connect a modem cable to the network adapter connector.

Voltage from telephone communications can cause damage to the network adapter

Connect the modem or network cable.

Insert the network cable, not the telephone line, into the network

connector. If you have an optional modem, connect the telephone line to

the modem.

After you reinstall your operating system,

use the Drivers and Utilities media to

reinstall drivers for the devices that came

with your computer.

Your operating system product key label is

located on your computer.

NOTE: The color of your CD varies based

on the operating system you ordered.

What Are You Looking For? Find It Here

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