Cooling fan error - 90B

[NAIKVJ1]

Hi!

When I try to switch on my computer a black screen appear with this error:

"The system has detected that a cooling fan is not operating correctly.

Continued operation is not recommended and may cause unpredictable behavior that could result in random shutdown, data loss or possible system damage. The system will shut down in 15 seconds. To prevent shutdown and continue operation, press the Enter key now. "

90B error,

Do I have to take  it to a repair service point or can I solve this problem from home?

I have cleaned the cooling vents  error went off but next day when i restarted  error appeared again. 

Thank you in advance,

Vijay 

[Eziq]

Product: HP Pavilion Gaming 15-DkOO42TX

I suddenly have message [system fan 90b] while startup. I'm sure it is not hardware issue because i bought my laptop 3 months ago, and this thing happen after i update some OS windows feature.

[Riddle_Decipher]

@NAIKVJ1 & @Eziq To fix this error, use the following steps:

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.

3. After you remove the dust, turn on the computer. If the error message persists, continue with these steps.

4. 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.

5. 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.

6. Have the computer serviced to clean internal components and replace the system fan if necessary. Make sure to address the following items when servicing:

   • Thoroughly remove dust from all internal cooling components.

   • Make sure wires from the system and CPU fans are connected securely to the motherboard.

   • Confirm the system fan blades spin correctly, and the fan is not producing loud noises. If not working correctly, replace the system fan.

   • Remove old thermal compound from integrated circuits and heat sinks and replace with new thermal compound.

P.S: Welcome to HP Community 😉

Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us, 

have a good day, ahead.