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‎03-29-2026 09:13 AM

HP Recommended

A few weeks ago my laptop gave error 90B. I noticed that the FANs were not working. I tried testing them one by one by disconnecting each other. Same result! I ordered two new compatible fans, with the same code as the old ones, on Aliexpress. I installed them but still the same error code! I tried disconnecting the battery, resetting it, turning on the computer, it showed me CMOS RESET.

 

I repeated the tests again, with the old fans and with the new ones. Same situation! I also did tests by disconnecting the HDD, RAM etc.

 

Any idea what it could be? Could it be related to some hardware damage, a damaged Fan Fuse?

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10 REPLIES 10

‎03-29-2026 09:45 AM

HP Recommended

Hi @tonialb 

 

Follow the steps in this link

 

HP PCs - 900, 901, 909, 90A, 90B, 90E, 90F, 911 error is displayed on a black screen | HP® Support

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‎03-29-2026 10:13 AM

HP Recommended

Hi Resistencia,

Yes, I did all these steps, unfortunately nothing changed!

 

The idea of updateting the Bios is OK, but how to update it? The PC turns off for 15s. If I want to continue, without fans, I'm afraid I'll damage the CPU/GPU!

 

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‎03-29-2026 10:22 AM

HP Recommended

The problem is that you have to take a risk and update the BIOS with the fans turned off; otherwise, you'll have to take the laptop to a specialist.

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‎03-30-2026 09:59 AM

HP Recommended

Hi,

 

OK,

 

Bios updated to the latest version F26. In Bios, at Fans tab, I checked "Always ON". Still, fans are not spininig!

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‎03-30-2026 10:22 AM

HP Recommended

I think the fans are broken. Can you check if all the drivers are working in Device Manager?

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‎03-30-2026 11:01 AM

HP Recommended

I really wish these fans were broken! But I'm afraid there is something on motherboard level. Because the same result I got with a new pair of fans. Only if it's a coincidence that the new fans are also broken! As far as compatibility is concerned in this scenario, I made sure they had the same codes with the old ones.
2802.jpg
bios screenshot

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‎03-30-2026 11:06 AM

HP Recommended

Device ManagerDevice Manager

There is no alarm to worry about here!

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‎03-30-2026 11:11 AM

HP Recommended

 

The part number for the fan is as follows

 

L98737-001
FAN N18E 12V

 

Genuine HP Fan L98737-001 | N18E 12V

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‎03-30-2026 01:08 PM

HP Recommended

Sorry due to our partnership agreements EMPR only sells and ships within Australia/New Zealand and we are unable to assist you.

 

I'm in EU! 😀

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