I did this similar procedure for an ASUS laptop once as a first line help desk tech. The student who brought it in had just bought the laptop not that long ago and wasn’t sure why it wouldn’t turn on anymore. I pulled up the docs to find where they stuck one of those tiny reset buttons that discharges all the circuits, held that for 10 seconds, and then it booted right up.
He asked what the problem was and I just shrugged and said sometimes circuits just get trapped in weird states and the only way to fix it is remove all power.