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Top Solutions

The most helpful knowledge articles for your product are included in this section.

Dell OptiPlex 790 System Guide

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Quick Links Getting Started with your Dell System System Documentation - User Guides/Manuals Find your Service Tag and Express Service Code Dell Drivers and Downloads Warranty Status and Service ...

Last Modified: 17 Jul 2020

Article ID: SLN285276

Windows 7 64-bit install on Optiplex 790/990 with UEFI Mode

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Users may want to install Windows 7 64-bit on an Optiplex 790 or 990 with the Basic Input/Output System (BIOS) Unified Extensible Firmware Interface (UEFI) setting enabled. Here are some important ...

Last Modified: 24 Sep 2019

Article ID: SLN82509

How to Connect Speakers or Headphones to a Dell Computer

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External speakers or headphones that are connected to a computer improves the audio quality while enjoying web content, digital music, and other sound sources. Speakers or headphones for computers ...

Last Modified: 10 Jul 2020

Article ID: SLN319604

Keyboard Usage and Troubleshooting Guide

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When your Wired USB, Wireless USB or Bluetooth® keyboard is not working as it should, refer to the expanding section below that best matches the issues that you are having and follow the ...

Last Modified: 01 Jul 2020

Article ID: SLN305029

Resolve No Power, No POST, No Boot or No Video issues with your Dell Computer

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This article helps determine why it does not power on, display video, or boot to the operating system correctly. This video is a great starting point to help identify which of the following ...

Last Modified: 22 Jun 2020

Article ID: SLN292599


Manuals and Documents

Manuals, documents, and other information for your product are included in this section.