I have a macbook OS X 10.5.8. Last night It was plugged in while I was using it. Suddenly the computer shut down. The port where the charger plugs in was hot and the computer would not start up. I let it sit for a few hours and then plugged the charger in and again let it sit to recharge for a few hours. This morning I went to try to start it up, it did turn on but was only at 30% batterie life. And after only a couple minutes the batterie icon indicates it is not receiving a charge. Did I fry something? Is it fixable?