My ASUS X555L was charging overnight, and while I was on it this morning, I didn't notice my charger wasn't functioning correctly until I received a low battery message. Everything was plugged in, and everything that I've done (hold power for 15 seconds, for 60 seconds) hasn't worked. Other threads instructed to take out the battery, but I don't believe this model allows you to do so. Do I need a new battery/motherboard/charger???