• 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
Summary of Contents for OptiPlex 390 Mini-Tower
Page 1: ...Dell OptiPlex 390 Mini Tower Owner s Manual Regulatory Model D12M Regulatory Type D12M001 ...
Page 6: ...6 ...
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Page 38: ...38 ...
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Page 50: ...50 ...
Page 52: ...7 Remove the screws that secure the system board to the computer 52 ...
Page 53: ...8 Slide the system board towards the front of the computer 53 ...
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