Why does the cooler start working after turning off the HP 250 G4 laptop?

Question

Windows

Bought a new laptop HP 250 G4 . It was DOS, installed Windows 10 - the problem is this:
After turning off the laptop, the cooler suddenly turns on and continues to work until you disconnect the battery. When you turn off the computer, the power (work) indicator stops burning, that is, the laptop is definitely turned off. I also noticed that if you connect the charger (with the laptop turned off), the cooler stops working, and as soon as the charger is disconnected, it starts making noise again.
I tried to install other systems: Windows 7 Ultimate, Windows 7 Professional, official drivers for 64-bit systems, everything is fine, but the cooler continues to turn on when the computer is turned off. For the first time I encounter this, I could not find a solution on the Internet. Can anyone help?

Answer 1

service and only

Answer 2

And if you hold down the power button for 5/10 seconds, it stops working ?!