Dell OptiPlex 755 System Guide

Dell OptiPlex 755 System Guide

Table of Contents:

  1. Installation / Drivers
  2. Security / Antivirus
  3. Software
  4. Hardware - Troubleshooting / Error Codes

OptiPlex 755 Knowledge Base Resource Library: Contains all the resources needed to resolve common issues.

Installation / Drivers

Installation Options:

The Installation Options section covers the Factory Restore, Clean Install and the Reinstallation options for your supported Operating System (OS).


The Drivers section covers the drivers, including the order and manner of their installation, that are required for the various OS's that are supported on your system.

Driver Install Order

  • Windows XP Driver Install Order
  • Windows Vista Driver Install Order - Please use the Windows XP install guide. The Device Manager entries should look similar, if not exactly the same in Windows Vista

Additional drivers are available at

Installing Drivers with the Resource CD/DVD

Identifying any Drivers not covered in the Install Order

Back to Top

Security / Antivirus

Security and Encryption:

The Security and Encryption section covers the security and encryption hardware/software currently available on your system, plus applicable upgrade options.


The Antivirus section provides various guides for the Antivirus Software currently shipping with our systems and also for removing the most well known Malware infections to date.

General Rules for safe Internet browsing:

The General Rules for safe Internet browsing section provides suggestions and best practices for navigating the Internet and minimizing security risk.

Back to Top


Software sold with your machine:

The software sold with your system section provides information on preinstalled software and how to identify the software sold with your system.

The following software is supported under the Pro Support Warranty






Digital Persona



Trend Micro





Using your Operating System:

This section covers guides on setting up and using your system when you first receive it.

Slow Performance:

This section covers resolving performance issues with your system.

Windows Blue Screen (Crash Screen) Errors:

This section covers system crashes, restarts and other OS issues.

Back to Top

Hardware - Troubleshooting / Error Codes

Getting to know your computer:

This section provides information, and pictures, about your particular system and will help you familiarize yourself with the system.

Safety Precautions and Tips:

This section provides information on safe practises to take into consideration before working with electrical equipment.

Diagnostics and Error Codes:

This section covers the various error messages, beep codes and Diagnostic LED codes that help to troubleshoot any issues with your system.

Hardware Troubleshooting:

This section covers troubleshooting guidelines for the various hardware-related faults you may experience on this particular system type.

Audio Issues

BIOS and Motherboard Issues

Fan and Overheating Issues

Hard Drive Issues

Input Devices Issues

Memory Issues

Networking Issues

No Post

No Power

Optical Drive Issues

Ports and Peripherals Issues

Video Issues

System Specific Troubleshooting:

This section includes links to any system-specific articles that provide solutions for your particular Dell PC.


Intel AMT settings

Back to Top

If you require further assistance or wish to give us feedback, please engage our technical team on Twitter

Article ID: SLN286258

Last Date Modified: 08/15/2019 03:22 PM

Rate this article

Easy to understand
Was this article helpful?
Yes No
Send us feedback
Comments cannot contain these special characters: <>()\
Sorry, our feedback system is currently down. Please try again later.

Thank you for your feedback.