Do you have more info on this? It’s not at all the behavior I observe. After I shut down windows, which I do basically every time I use it since I usually use Linux on that machine, it is completely off. Turning the pc on boots Linux (it’s first in the boot order).

It has modern standby and most of its other defaults, which I know because if it goes to sleep it doesn’t: the fan stays on and it never gets cold to the touch despite the blinking power led. The other day it randomly installed the windows update and rebooted because I found it waiting for the LUKS pin.

Look up 'Fast Startup'. It's a thing since Windows 8. It's a curse onto humanity.