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Arist429
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Error: System Fan Has Failed. Service PC to prevent damage to the system. Press <F2> to continue.

HP Pavilion a6400f Desktop (new board)
Microsoft Windows 8.1 (64-bit)

I had problems with my original mother board (Pavilion a6542p) which Ethernet input became inoperative. I replaced the old mother board Part# 5189-1080 Rev. A.01 with another identical part number and revision number. Everything start working fine, Ethernet input is fully operative and runs very nice; however, at boot up is when I find a problem. It shows this message: Error: System Fan Has failed. Service PC to prevent damage to the system. Press <F2> to continue. I have investigated, and seems to be that the problem comes from BIOS. Nevertheless, when I try to depress F10 to access the BIOS page and check it, I can't for F2 function comes first and I have to wait until this action starts, then I can depress F10. I get the System Page, but I can't have access to BIOS at all. I appreciate somebody's expertise to resolve this dilemma. Thanks, Arist429.

 Note: I updated this PC long time ago from Windows Vista to Windows 7 Professional.

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Error: System Fan Has Failed. Service PC to prevent damage to the system. Press <F2> to continue.

@Arist429
Thank you for posting on the HP Support Community.

 

This message indicates that the system fan is not spinning at the expected speed. This message occurs to help prevent costly damage to the computer.

To fix this error, use the following steps:  (do not skip any troubleshooting steps if you feel steps are repeating ) 

  1. Press Enter to clear the message and allow the system to boot to the Windows Desktop.
  2. Shut down the computer, and then inspect and clean the exterior vents to remove dust buildup by blowing air through the vent openings. Dust can accumulate inside the vent openings and around internal cooling components, preventing the removal of heat.

For more information on reducing heat inside your computer, see Reducing Heat Inside the PC.

  1. After you remove the dust, turn on the computer. If the error message persists, continue with these steps.
  2. Perform a hard reset. Performing a hard reset can reset recorded thermal values in memory and enable you to use the computer again, even if only for a short time to access and save any important files before service.

For more information on performing a hard reset, see Use Hard Reset to Resolve Hardware and Software Issues.

  • In some cases, updating the BIOS might help prevent this error from occurring. For more information on how to update the BIOS, see Updating the BIOS.

NOTE: HP does not recommend upgrading or downgrading hardware parts or software that is bundled with the product as It may affect the manufacturer's warranty and performance, however, you could change the configuration at your own discretion.

 

Hope this helps! Keep me posted for further assistance.
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Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

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