78 Intel® Server Board S3420GP User Guide
Specific Problems and Corrective Actions
This section provides possible solutions for these specific problems:
• Power light does not light.
• No characters appear on screen.
• Characters on the screen appear distorted or incorrect.
• System cooling fans do not rotate.
• Hard disk drive activity light does not light.
• Optical drive activity light does not light.
• There are problems with application software.
• The bootable CD-ROM is not detected.
Try the following solutions in the order given. If you cannot correct the problem, contact
your service representative or authorized dealer for help.
Power Light Does Not Light
Check the following:
• Did you press the power-on button?
• Is the system operating normally? If so, the power LED might be defective or the
cable from the control panel to the server board might be loose.
• Have you securely plugged the server AC power cord into the power supply?
• Some ATX power supplies have a power switch on the back of the power supply,
next to the fan. If your system has one, is it turned on?
• Remove all add-in cards and see if the system boots. If successful, add the cards
back in one at a time with a reboot between each addition.
• Make sure the memory DIMMs comply with the system requirements.
• Make sure the memory DIMMs were populated according to the system
requirements.
• Remove the memory DIMMs and re-seat them.
• Make sure the processor(s) comply with the system requirements.
• Make sure the processor(s) were populated according to the system requirements.
• Remove the processor(s) and re-seat them.
• Make sure the chassis standoffs are installed only below mounting holes. Misplaced
standoffs can contact the pins on the bottom of the server board and cause a short.
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