Search OptiPlex 755 Support Information
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The most helpful knowledge articles for your product are included in this section.
Keyboard Troubleshooting and Usage: The Definitive Guide
Keyboard Troubleshooting and Usage: The Definitive Guide
See the Suggested Quick Fixes for a desktop or laptop keyboard not working and the keyboard troubleshooting sections for help with resolving your keyboard issues.
Last Modified: 20 SEP 2023
Article ID: 000131432
Article type: Solution
How to Troubleshoot USB Port When it is Not Working
How to Troubleshoot USB Port When it is Not Working
This article provides information about how to troubleshoot and resolve USB-related issues on your Dell computer. Find step-by-step instructions to fix USB issues if a USB port is not working.
Last Modified: 19 SEP 2023
Article ID: 000132048
Article type: Solution
Resolve No Power, No POST, No Boot or No Video issues with your Dell Computer
Resolve No Power, No POST, No Boot or No Video issues with your Dell Computer
This article is a guide to identifying and resolving start-up or power issues with your Dell personal computer. (These include No Power - No signs of life, No POST - Diagnostic LEDs or Beeps, No Boot - Cannot load Operating System and No Video - personal computer starts but nothing that is seen on the display.)
Last Modified: 18 SEP 2023
Article ID: 000125609
Article type: Solution
How to Troubleshoot Display or Video Issues on a Dell Monitor
How to Troubleshoot Display or Video Issues on a Dell Monitor
This article provides information about how to troubleshoot and fix common display or video issues on a Dell monitor.
Last Modified: 18 SEP 2023
Article ID: 000132354
Article type: Solution
How to Troubleshoot Blue Screen or STOP Error Code on a Dell Computer
How to Troubleshoot Blue Screen or STOP Error Code on a Dell Computer
This article provides information about how to identify and troubleshoot blue screen or stop errors on a Dell computer. Find troubleshooting steps to resolve blue screen or stop errors.
Last Modified: 06 SEP 2023
Article ID: 000123379
Article type: Solution
Manuals and Documents
Manuals, documents, and other information for your product are included in this section.
OptiPlex 755 Quick Reference Guide
Publish date: 20 APR 2008Publish date: 20 APR 2008
Dell OptiPlex 755 User's Guide
Publish date: 20 APR 2008Publish date: 20 APR 2008
Regulatory Information
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