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‎06-06-2021 06:03 AM

HP Recommended
Product: HP 110-016 IN
Operating System: Microsoft Windows 10 (64-bit)

Hi Team, 

I encounter every time I start the PC  a boot time : " error 511-CPU Fan not found" .

I checked up for any dust accumulation over CPU fan or the cool vents are blocked , but the CPU inside as well all the vents are  very neat & clean looks new even after 8 years   . No clogging . I hear  sudden buzzing whiff noise from fan after every  1 or 2 hours . 

How to remove the " error 511-CPU Fan not found"  appearing at booting ? Please advise.

 

With Regards

K V S Madhava Rao

1 person had the same question
1 ACCEPTED SOLUTION

Accepted Solutions

‎06-06-2021 07:49 AM

HP Recommended

The CPU fan is the most important fan, so be sure it is running by observation.  Otherwise there is a risk of failure if it is truly not running.  Open the case to look, verifying that it actually is running.

The warning is produced by a sensor on the motherboard that monitors the current the CPU fan is using to run.  Either the fan has changed its characteristics or the sensor has failed.  I know of no way to disable the warning, but you could try changing the fan (replace).  I would be concerned with this statement "I hear sudden buzzing whiff noise from fan after every 1 or 2 hours " without at least observing the fan - remove the case to make it visible.  You need to do that to see if the CPU fan is running, anyways.


I'm not an HP employee.
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1 REPLY 1

‎06-06-2021 07:49 AM

HP Recommended

The CPU fan is the most important fan, so be sure it is running by observation.  Otherwise there is a risk of failure if it is truly not running.  Open the case to look, verifying that it actually is running.

The warning is produced by a sensor on the motherboard that monitors the current the CPU fan is using to run.  Either the fan has changed its characteristics or the sensor has failed.  I know of no way to disable the warning, but you could try changing the fan (replace).  I would be concerned with this statement "I hear sudden buzzing whiff noise from fan after every 1 or 2 hours " without at least observing the fan - remove the case to make it visible.  You need to do that to see if the CPU fan is running, anyways.


I'm not an HP employee.
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Did you find this message useful? Click on the "Was this reply helpful" Yes button.
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