Hello, hello. This is my first time posting here. I have an HP 510, model number H510FFUP770w560YCc51Pa. I'm not sure what the part is called, but where you plug the AC adapter in hasn't been working. The cord works, just not the little port. It seems the metal post in the center is loose. Is there a way to tighten it/replace it or do I need a whole new bottom chassis?