So I charged my laptop (ROG Zephyrus, running Win 10 while it was shut down) overnight. It was fully plugged in and correctly positioned so battery should have been at 100%. When I shut down, the machine was plugged in (i.e. battery at 100%) and the the display clearly indicated as such.
When I turned it on this morning, I signed in as usual but it suddenly said low power and locked. Now, the power button was still lit red, but I seemingly couldn't revive the machine. So I forced shut down (by pressing the power button) and now the machine can't start up again (nothing lights up)
Not sure what's happening here and would appreciate any suggestions.