Laptop cooling problem, what to do?

Question

laptops

Guys, thought divider. A problem of this kind: HP Pavilion dv6 3056er laptop, when turned on, the cooler does not start at all. It stays that way until it overheats. Again, when starting, it gives an error 90b. So, the cooler does not work only when the laptop is powered from the network, that is, if you switch it to the battery, the cooler starts working, even I would say at max speed. The laptop was disassembled, cleaned, checked the cooler on a 1.5v battery))) it works. I've been breaking my head for a long time, what's wrong with him ??? Can you reanimate with dignity? I would not want to solder the cooler to usb ...

Answer 1

Control Panel - Power Options - Advanced Settings - Processor Power Management - System Cooling Policy
And see what is set from the mains and from the battery - passive or active.
Something similar happens in BIOS.
Well, the standard actions "Update BIOS to the latest", "Reset BIOS"