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- HP Community
- Desktops
- Desktop Boot and Lockup
- System Fan (90b)

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08-28-2020 04:57 AM
I have the original fans and they're in great shape, but I cannot boot up without a blue screen saying "System Fan (90b)"
08-30-2020 02:41 PM
I reviewed your post and I understand that you are getting a system fan error 90B on startup.
Don’t worry, I assure you I will try my best to get this sorted.
I recommend you update the BIOS from the below link and check whether the issue is resolved.
https://support.hp.com/in-en/drivers
If the issue persists, then continue troubleshooting from the below article.
https://support.hp.com/in-en/document/c03620929
Let me know how it goes and you have a great day!
P.S: Welcome to the HP Support Community 😊
If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!
Cheers!
Stay Home – Stay Safe
The_Fossette
I am an HP Employee