• ×
    Information
    Need Windows 11 help?
    Check documents on compatibility, FAQs, upgrade information and available fixes.
    Windows 11 Support Center.
  • post a message
  • ×
    Information
    Need Windows 11 help?
    Check documents on compatibility, FAQs, upgrade information and available fixes.
    Windows 11 Support Center.
  • post a message
Guidelines
Are you having HotKey issues? Click here for tips and tricks.
Locked

‎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.
Did this message answer your question? Please indicate below as an Accepted Solution!
Did you find this message useful? Click on the "Was this reply helpful" Yes button.

View solution in original post

Was this reply helpful? Yes No
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.
Did this message answer your question? Please indicate below as an Accepted Solution!
Did you find this message useful? Click on the "Was this reply helpful" Yes button.
Was this reply helpful? Yes No
Warning
Be alert for scammers posting fake support phone numbers and/or email addresses on the community.
If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation.
Didn't find what you were looking for? Ask the community
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.