I have similar sporadic Windows use, but never random reboots. What I do get is updates happening at boot or at shutdown. The latter is okayish, but the former

I have similar sporadic Windows use, but never random reboots. What I do get is updates happening at boot or at shutdown. The latter is okayish, but the former is annoying: you haven't used Windows for a while, and when you do need to use it, it takes forever to start up.