My laptop is pretty old but overall I've taken a good care of it and it runs smoothly and nice. The problem is that about a couple of months ago as I was sitting and watching some series it suddenly stopped charging. I re-plugged the charger and it would work for a minute or so. I tried various things and ended up buying and replacing the Dc Jack, but in vain. The same thing happens. I plug it in, it turns on and stops charging after approximately 3 minutes. I tried to take out the battery but it shuts down (like the power source is being plugged off), when I have the battery in, right after typing in my password it says that the charger isn't plugged in and when I re-plug it, it charges for a few seconds only before saying again that the charger isn't plugged in. I don't know what else to do