After upgrading to a new processor, the system will no longer pass a Power On Self Test (POST) and/or load the operat

Article Number: CPU-8

​Issue Description:
The system will not pass a Power On Self Test (POST) and/or load the operating system. The only system change was a processor upgrade. The case lights (Power, Hard Drive or Disc Drive LED) light up and the internal fans spin, confirming that the system is receiving power.

Troubleshooting:
The following troubleshooting suggestions can help resolve system boot issues that occur after a processor upgrade.

Table of Contents:

Check for motherboard indication errors:
Depending on the motherboard, it may have an audible beep-code or onboard LED indicator to help identify the root cause of the problem.

  • The error definition can vary depending on the motherboard brand/model. For proper instructions on how to resolve the error defined, refer to the motherboard’s manual or contact the motherboard manufacturer

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Check connection / installation of all hardware components:
During the installation of the processor, another system component could have been disconnected/uninstalled inadvertently

  • Ensure all required cable connections are securely plugged in:
    • Power cables to motherboard
    • Heatsink fan cable to motherboard
    • Power button cable to motherboard
    • Hard Drive cable to motherboard
    • Monitor cable to motherboard
    • Power cable to monitor
    • Depending on the graphics card, a dedicated power source to graphics card may be required
  • Ensure all required hardware components are installed correctly and/or reseated:
    • Refer to AMD Processor Installation Videos to ensure proper installation of the processor and a compatible heatsink/fan
    • Reseat the memory module(s)
    • Reseat the graphics card(s)

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Ensure enough wattage is provided by the power supply:
An insufficient power supply can prevent the system from booting.

  • To ensure the power supply wattage is sufficient for the system, add up the wattage requirements of each hardware component.
  • Confirm that the wattage output of the power supply is greater than the system’s overall wattage requirements.
  • To view the wattage requirements of the processor, refer to AMD Compare

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Check for processor and motherboard compatibility:
If the processor was released after the motherboard, the motherboard’s BIOS version may not support the processor. Refer to the motherboard’s manual or manufacturer’s website for an up-to-date processor support listing for the motherboard.

  • Verify that the motherboard’s BIOS version supports the model and version of the processor
  • Download and install any necessary BIOS updates
  • If the motherboard must be replaced, choose one of the AMD Processors – Recommended Motherboards for the processor

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Verify functionality of the processor:
To ensure the new processor is functioning properly, try one of the following:

  • Test 1: Test the new processor in another system that is known to be compatible with the processor
    • If the system boots, the problem may be related to other hardware components
      • Other components that can prevent the system from booting are the power supply, motherboard, memory, graphics card and hard drive
      • Contact each device manufacturer for further troubleshooting
    • If the system does not boot, the problem may be related to the processor
      • Check the processor for any damage (bent pins, burn marks, pin discoloration)
      • To obtain warranty service for your AMD Processor in a Box, contact your computer system manufacturer or distributor during the systems warranty period. After your computer system warranty has expired, you can submit a warranty request to AMD Customer Care
  • Test 2: Reinstall the old processor in the system to determine if the system will boot
    • If the system boots, the problem may be related to the processor
      • Check the processor for any damage (bent pins, burn marks, pin discoloration)
      • To obtain warranty service for your AMD Processor in a Box, contact your computer system manufacturer or distributor during the systems warranty period. After your computer system warranty has expired, you can submit a warranty request to AMD Customer Care
    • If the system does not boot, the problem may be related to other hardware components
      • Other components that can prevent the system from booting are the power supply, motherboard, memory, graphics card and hard drive
      • Contact each device manufacturer for further troubleshooting

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Footnotes