Yes, there are settings that can tell Windows to wake up to do certain updates. But that shoudn't have any effect on lights in the kitchen and the washroom.
I’m not sure what to post this on or if anyone even has an answer? But just a bit ago exactly at 3:00am both my computer from my room and the living room had turned on by them selves then immidiately turned off, Idk if it was an electrical thing as at the same time my kitchen light was Turing on and off on its own and my washroom light came on but didn’t turn its self off, I’m not sure if any of that caused my PCs to turn them selves on. Sorry if this isn’t the place to post but I did not know where to post it.