Sometimes when I connect my charger for my Macbook, it will not charge, and the screen for the battery says that it is not charging. The light on the charger is just blank without any lights. I normally have to push the charger for the charing to start. Is there any way that I can fix this problem? It really isn't a problem, but it is a nuciance pushing the charger everytime I'm charging my computer. Oh, and my charger is a L-sytle charger.