– how does a computer prevent itself from fully shutting down when you restart it?

Question

– how does a computer prevent itself from fully shutting down when you restart it?

In: Engineering

Answer 1

a computer never fully shuts down, even if it is unplugged, there is a tinny battery in it keeping some of the systems alive (mainly the clock). There are other systems that are always on if the computer is plugged in. One of these is told “Hey, we are shutting down, once we do, turn the computer back on.” So it does. This subsystem can also handle turning on the computer at a specific time (for updates at midnight say)