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 1
Flag Post

90B Error immediately after BIOS update

HP Recommended

Did a BIOS update as recommended by HP Support Assistant - as the PC started to turn back on, the screen showed the 90B Pump Speed error message, and automatically shut down in 15 seconds.  


Also worth noting, earlier this evening I had my PC apart to dust the fans and replace the thermal paste between the pump fan and CPU.  However, the computer was operating just fine after doing this but prior to the BIOS update, so this leads me to believe its a system issue or perhaps outdated fans or other hardware. 


Any help is very appreciated, thank you in advance.  Hopefully I didn’t screw anything up! 



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