Dell OptiPlex 3010 Small Form Factor Owner's Manual page 44

Problem A possible system board failure has occurred.
Description
Troubleshooting Unplug the computer. Allow one minute for the power to drain. Plug the computer into a
Steps working electrical outlet and press the power button.
LED
Power Button
Problem A possible system board, power supply, or peripheral failure has occurred.
Description
Troubleshooting
Steps
LED
Power Button
Problem Memory modules are detected, but a memory power failure has occurred.
Description
Troubleshooting
Steps
LED
Power Button
44
• Power off computer, leaving the computer plugged in. Press and hold the power supply
test button at the rear of the power supply unit. If the LED next to the switch
illuminates, the problem may be with your system board.
• If the LED next to the switch does not illuminate, disconnect all internal and external
peripherals, and press and hold the power supply test button. If it illuminates, there
could be a problem with a peripheral.
• If the LED still does not illuminate, remove the PSU connections from the system board,
then press and hold the power supply button. If it illuminates, there could be a problem
with the system board.
• If the LED still does not illuminate, the problem is with the power supply.
• 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 same type into your computer.