Showing results for 
Search instead for 
Did you mean: 
The HP Calculator Community Message Board is moving. While we prepare for the move, we are unable to accept new postings. During the move, you can look for help from other users by visiting . Or if you need technical support for your calculator visit: HP Calculators. .
New member
1 0 0 0
Message 1 of 2
Flag Post

CPU Fan (90B)

HP Recommended
Example: HP Slimline 270-p020I
Microsoft Windows 10 (64-bit)

We use HP Slimline 270-p020I for control and monitoring Building Automation System (BAS) in MRT Jakarta Train Station and it work for 7 x 24 Hours. Now, it got trouble.  It shown on alert "CPU Fan (90B)" and shut down after 15 seconds immediately. The CPU fan has an abnormal sound like spinning for 3 seconds and OFF for 3 seconds repeatedly every I try to turn it back to ON. How to fix it ? 

Level 15
Level 15
12,842 10,241 1,775 4,547
Message 2 of 2
Flag Post
HP Recommended


This is for information only,  the fan can be removed (4) screws.

CPU fan  is a PWM 4 pin type. Likely 80mm, but here is how to measure.

  IF IT IS an 80mm, You want a fan with 800-2500 RPM

This system is feedback driven thru Solution and Kudo flags. It's the only means of knowing if you have been served. Please click Accept as Solution, if your problem is solved. To say THANK YOU, press the "thumbs up symbol" to render a KUDO. You can render both Solution and KUDO..

HP Envy 8 5010 Tablet
(2) HP DV7t i7 3160QM 2.3Ghz 8GB
Printer -- HP OfficeJet Pro 8620 Legal
Custom Asus Z97D, I7-4790k, 16GB RAM, WIN10 Pro 64bit, ZOTAC GTX1080 AMP Extreme 3 fan 8GB RAM, 500GB SSD, Asus PB287 4k monitor, Rosewill Blackhawk case and 750W OCZ PSU.
Was this reply helpful? Yes No
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation