Dell OptiPlex 390 Small Form Factor Owner's Manual page 69

Memory modules are detected, but a memory power
If two or more memory modules are installed, remove
the modules, then re-install one module and re-start
the computer. If the computer starts normally,
continue to install additional memory modules (one at
a time) until you have identified a faulty module or
reinstalled all modules without error. If only one
memory module is installed, try moving it to a different
. DIMM connector and re-start the computer
If available, install verified working memory of the
The computer hardware is operating normally but the
. A possible system board failure has occurred
Remove all peripheral cards from the PCI and PCI-E
slots and re-start the computer. If the computer boots,
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. failure has occurred
. same type into your computer
. BIOS may be corrupt or missing
. BIOS may be corrupt or missing
Power Button
Problem
Description
Troubleshooting
•
Steps
•
Power Button
Problem Description
Troubleshooting Steps
Power Button
Problem Description
Troubleshooting
Steps
LED
LED
LED