Cooling fan 90B error.

[Uzma9]

Hp laptop 90b error. Cooling fan is not working

[Garp_senchau]

@Uzma9, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

The 90B error on your HP laptop indicates that a cooling fan is not operating correctly. This can lead to system shutdown, data loss, or possible system damage. Here are the steps to resolve this issue:

Initial Troubleshooting

Update BIOS and Drivers:

• Ensure that your BIOS and drivers are up to date as this may implement new fan characteristics and updates for other components. You can find instructions on updating the BIOS for different HP models:
  • HP Consumer Notebook PCs - Updating the BIOS (Windows)
  • HP Business Notebook PCs - Updating the BIOS

Clean Exterior Vents:

• Turn off the computer and inspect the exterior vents. Remove any dust buildup by blowing air through the vent openings. Dust can accumulate inside the vent openings and around internal cooling components, preventing heat removal.
• Refer to HP Notebook PCs - Reduce heat inside the laptop to prevent overheating in Windows for additional guidance.

Perform a Hard Reset:

• Performing a hard reset can reset recorded thermal values in the memory. Instructions for performing a hard reset can be found here:
  • HP PCs - How to Power Reset Your Computer

Steps if Error Persists

Verify Thermal Condition:

• Check the fan and connection, reseating the fan cable.
• Ensure that there are no obstructions or dust in the heat sink fan, fin, or vent.

Test Fan:

• Use the HP PC Hardware Diagnostics (UEFI) tool to test the fan. Ensure that the fan is not producing loud noise and that fan blades spin correctly.

Replace Fan:

• If necessary, replace the fan with a verified working one.

Also, I suggest you refer to this guide: HP PCs - 900, 901, 909, 90A, 90B, 90E, 90F, 911 error is displayed on a black screen | HP® Support

I hope this helps.

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,