Since it is a somewhat old laptop it could be the battery has simply died and will no longer accept a charge. If you can still use the laptop when it is plugged into the A/C outlet, then that rules out the charger and the power connector.
The only way to know for sure is to buy a replacement battery.
Since it is a somewhat old laptop it could be the battery has simply died and will no longer accept a charge. If you can still use the laptop when it is plugged into the A/C outlet, then that rules out the charger and the power connector.
The only way to know for sure is to buy a replacement battery.