My Verizon Nokia Lumia 2520 tablet will not turn on while plugged in or it will not charge battery. I was actual on the device when it shut down. I am aware of the on & off key but this isn't the problem in this new issue. Could it be a bad battery or charger. The light on the charger is lit up and the screen shows for a short time- the battery low level even though it's been plugged in the whole time of usage. Any suggestions... Thank you in advance