I have a Toshiba P50 Satallite laptop. I believe I damaged the AC port, so I ordered the part and replaced it. The laptop WILL power on, but it won't /stay/ on. After about 1 minute, it still reports 0 charge on battery and powers down. It does recognize the cord, and even says its charging, but it doesn't charge and doesn't stay on with the ac adaptor plugged in. Is this issue my battery, or is it my plug? Or something else?