Question "Fan error 90b" on HP Pavilion dv6 laptop ?

[AdriansLV]

I have fan problem with my HP Pavilion dv6 laptop. When turning on it shows "fan error 90b" and i don't hear the fan spinning . So i disassambled the laptop to see the fan. So now i can see the fan i turned the laptop on and the fan just spins for 1 second and stops and it does this repeatedly. So then i searched for solutions how to fix this problem. I tried all these solutions:

• cleaning the fan
• cleaning radiators
• checking fan wires
• checking if the fan is stuck
• replacing thermal-paste
• changing thermal-pads
• resetting bios by taking out cmos battery
• updating bios

None of those solutions worked. But sometimes the fan spins normally for 10 seconds and then starts doing the same start stop thing.

 

[Colif]

Could see if its windows:

Try a clean boot and see if it changes anything - make sure to read instructions and make sure NOT to disable any microsoft services or windows won't load right - https://support.microsoft.com/en-au/help/929135/how-to-perform-a-clean-boot-in-windows

all this does is stops non Microsoft programs from running at startup. Easily reversed.

if clean boot fixes it, it shows its likely a startup program. You should, over a number of startups. restart the programs you stopped to isolate the one that is to blame.

what power plan are you running in windows?