I have to agree with the power draw, I have a really old lap top and the battery is dead, but I keep it plugged in and never have melty issues. There is something that is drawing too much energy into the charger, and since your on charger # two there is one common denominator. the lap top...If its still under warranty take it in, if not its almost cheaper for you to take it apart and see...but It will NEVER go back together the same way. Yes, I speak from experience. I took apart a dell with a lose power port. I fixed it, but the screen died a month ago...