Let’s say your laptop does not start at all. You plug in the power adapter and press on the power button, but the laptop will not react. It’s dead and the power or battery charge LED will not light up.
What could be wrong? Is it bad power jack or the motherboard is dead?
First of all, test the AC/DC power adapter with a multimeter. It’s possible that there is noting wrong with the laptop and your problem is related to the power adapter.