Baterys even exact matches some times come over charged. This will damage your device, in some cases a little and in this case kill the device. Send it in for warenty repare. You can do this under the device and the batery. Note you pay shiping.
The cord could be part of the mess. Ive encountered this on a smaller level. In my case it was the memory was maxed. The other time it was 39 vireses and 2 trojans. In the last the pc was junk, the first was a hard start. Power off. Hold vol. - and power on. Conferm prompts. Done. I hope this helps.