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Dell OptiPlex 390 Mini-Tower - Diagnostic Light Patterns: Memory Configuration;Compatibility Error; Diagnostic Light Patterns: Expansion Card Failure

Dell OptiPlex 390 Mini-Tower
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If available, install working memory of the same type
into your computer.
LED
Power Button
Problem Description Memory modules are detected, but a memory
configuration or compatibility error has occurred.
Troubleshooting Steps
Ensure that no special requirements for memory
module/connector placement exist.
Ensure that the memory you are using is supported
by your computer.
LED
Power Button
Problem Description A possible expansion card failure has occurred.
Troubleshooting
Steps
Determine if a conflict exists by removing an
expansion card (not a graphics card) and restarting
the computer.
If the problem persists, reinstall the card you
removed, then remove a different card and restart
the computer.
Repeat this process for each expansion card
installed. If the computer starts normally,
troubleshoot the last card removed from the
computer for resource conflicts.
LED
75

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