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Defective memory modules may cause boot errors. One, two or three beeps at boot indicate defective memory. To
isolate a specific memory module as defective, boot the system with just one memory module installed at a time.
Monitor Issues
Monitor configurations can cause boot failure. Run through the following checklist to verify monitor operation:
• Ensure the monitor is plugged in and turned on.
• Ensure all cables are connected properly between the monitor and the computer.
• Check the brightness and contrast controls on the monitor are not too low.
Most monitors employ indicator LEDs showing status. Refer to the monitor’s documentation to confirm operation.
If the problem still persists, try replacing the monitor or try the monitor on different AC outlet or a different sys-
tem.
Power Supply and Chassis Issues
• Ensure that the chassis and power supply is appropriate for the processor model and frequency.
• A 2x4 CPU power connector is required for all Intel® Server Boards. Power consumption requirements for
high-end video cards, sound cards, peripherals, and processors will exceed the typical 5A current capacity of
standard ATX & SPX power supplies.
• Ensure all power cables and connectors are firmly connected to the power supply and the AC outlet.
• If the power supply or the AC outlet has an on/off switch, make sure that it is on and verify that the outlet is
supplying current.
• Check for foreign objects inside the chassis such as screws that can short circuit server connections.
Cable Issues
Ensure that all cable connections, both internal and external, are attached correctly and securely.
Electrical Short or Overload
Remove non-essential items such as extra controller cards or IDE/ATAPI devices to check for shorts and over-
loads. If the system boots correctly, there may be a short or overload associated with one of the components.
Replace each of non-essential items one at a time to isolate which one is causing the problem.
If the problem occurs even after removing the non-essential components, the problem has to be with the server
board, power supply, memory, or processor.
Defective Components
Defective components, especially processor and memory, can cause system boot issues.
• Swap the memory modules with known good memory. Verify correct operation of the suspected memory in a
known working system.
• Swap the processor with a known good processor. Verify correct operation of the suspected processor in a
known working system.
System does not boot after configuration changes
Hardware Changes
If the system does not boot after making changes to hardware or adding new components, verify that the compo-
nent installed is compatible with the server.
Software Changes
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