Top Solutions

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

How to Download and Use the Dell Operating System Recovery Image

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Learn how to download an image for your Dell computer and use that image to restore your Windows operating system.

Last Modified: 14 NOV 2022

Article ID: 000123667

Article type: Solution

How to Diagnose and Resolve Common Memory Issues on a Dell Desktop Computer

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This article provides information about what memory issues can be seen and how to troubleshoot them on a Dell Desktop computer.

Last Modified: 10 NOV 2022

Article ID: 000126068

Article type: Solution

Dell Display Pixel Guidelines

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This article provides information about Dell's display resolution guidelines for LCD panels of Dell monitors and laptops. Learn what a dot or pixel is, what the Premium Panel Exchange is, how to identify a bright or dead pixel on the LCD panel and more.

Last Modified: 09 NOV 2022

Article ID: 000126004

Article type: Solution

How to Troubleshoot Blue Screen or STOP Error Code on a Dell Computer

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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: 02 NOV 2022

Article ID: 000123379

Article type: Solution

Guidance for Keeping Your Dell Technologies Equipment Clean

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Find out information about how to clean your Dell equipment.

Last Modified: 12 OCT 2022

Article ID: 000133659

Article type: Solution


Manuals and Documents

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

OptiPlex 390 Mini-Tower Owner's Manual

Publish date: 29 SEP 2011
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Publish date: 29 SEP 2011

OptiPlex 390 Desktop Owner's Manual

Publish date: 29 SEP 2011
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Publish date: 29 SEP 2011

OptiPlex 390 Small Form Factor Owner's Manual

Publish date: 29 SEP 2011
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Publish date: 29 SEP 2011

OptiPlex 390 Setup and Features Information Tech Sheet

Publish date: 29 SEP 2011
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Publish date: 29 SEP 2011

Regulatory Information

Regulatory Information for your product is included in this section. Learn more about regulatory compliance

Dell OptiPlex 390 Small Form FactorRegulatory Model D04SRegulatory Type D04S001

DELL Regulatory and Environmental Datasheet
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DELL Regulatory and Environmental Datasheet

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Dell OptiPlex 390 Small Form FactorRegulatory Model D04SRegulatory Type D04S001

EUROPEAN UNION - Declaration of Conformity
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EUROPEAN UNION - Declaration of Conformity

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Dell OptiPlex 390 DesktopRegulatory Model D07DRegulatory Type D07D001

DELL Regulatory and Environmental Datasheet
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DELL Regulatory and Environmental Datasheet

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Dell OptiPlex 390 DesktopRegulatory Model D07DRegulatory Type D07D001

EUROPEAN UNION - Declaration of Conformity
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EUROPEAN UNION - Declaration of Conformity

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Dell OptiPlex 390 Mini-TowerRegulatory Model D12MRegulatory Type D12M001

DELL Regulatory and Environmental Datasheet
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DELL Regulatory and Environmental Datasheet

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Dell OptiPlex 390 Mini-TowerRegulatory Model D12MRegulatory Type D12M001

EUROPEAN UNION - Declaration of Conformity
View PDF
EUROPEAN UNION - Declaration of Conformity

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Videos

Videos for your product are included in this section. See Video Tutorials

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