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- HP Community
- Notebooks
- Notebook Operating System and Recovery
- Re: system fan (90B)

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02-15-2022 05:20 PM
I have a HP Pavilion Notebook 15-ab223cl (touch) (Energy Star) computer. Product # N5R49UA#ABA.
I just installed a new battery and left it charge over night. I turned it on and the black screen stated my cooling fan is not operating. How do I fix it? I did spray the fan area to clean it and I can not tell if there is a fan running.
Thanks
itax4u2
02-15-2022 07:17 PM
Hello @itax4u2 .
What product did you spray the fan with?
The power drain is suitable for a hardware reboot or hard reset to be performed, and this does not erase personal information.
Many boot errors and other problems can be solved by reducing the stored energy in the hardware components. This procedure of reducing stored energy is also known as a hard reset.
o Turn off the computer.
o Disconnect the computer from any port replicators or docking stations.
o Disconnect all peripheral devices, such as USB storage devices, external displays, or printers.
o Disconnect the AC adapter from the computer.
o Turn the computer over and look for the battery compartment door to determine whether or not your computer's battery is removable.
o Now to consume any residual electrical charge from the capacitors protecting the memory, perform the following as it is the basics of this:
If you see an access door to the battery compartment, your equipment has a removable battery. Remove the battery, press and hold the power button for 15 seconds, reinsert the battery back into the compartment and proceed to the next step.
If you do not see any access door to the battery compartment, your computer does not have a removable battery. On most laptops with a non-removable battery, press and hold the power button for 15 seconds to complete the restart and proceed to the next step. More information: https://support.hp.com/mx-es/document/c01811996
1. Reconnect the AC adapter to the computer, but do not connect any peripheral devices.
2. Turn on the computer.
If a startup menu opens, use the arrow keys to select Start Windows normally and then press enter.
3. Once the peripheral devices are connected, run Windows Update and HP Support Assistant to update all drivers and the system.
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02-15-2022 10:41 PM
I followed instructions and did the reset. When I turned it on I had the same page "The system has detected a cooling fan is not operating correctly. " So the problem has not been resolved. I cannot get rid of that page at the beginning. It was suggested to reset my BIOS but I can't get to it because of the black screen message. I have tried turning on the computer and immediately pressing F2, I have tried F12, F10, F1 and DEL. I can't get to my BIOS to run the Diagnostics option. any suggestions
thanks
02-16-2022 03:10 PM
@itax4u2 .
The fan must be replaced.
I am proudly Mexican, a Computer Systems Engineer and a community volunteer.
If you found the answer helpful and/or you want to say “thanks”? Click the “ Yes ” box belowDid I help solve the problem? don´t forget to click “ Accept as a solution”
, someone who has the same query may find this solution and be helped by it.