Good Edgar ... for what you say, you have a theme in the charger connector (on the laptop) or in the voltage input circuit. Things: does the charger work well? did you measure it with a tester? - You should try to touch the charger when it is plugged into the laptop, moving the tab to see if it matches at some point hooks and charges. - Another test: do you have a battery charged from that laptop? Let's see if it turns on without charger but with battery. - Another: you could open it and see if any fault is evident in the mother or in the load card. Tell us how it went! a hug