My wife always charges her nexus before it dies, no problem. Today was the Second time we charge it after the battery completely died. Both times when we plug it in the screen stays on but goes completely blank. After leaving it plugged in like this for a couple hours we come back to look at it and we can't do anything with the screen, and won't turn on or off. After holding the power button for an extended period of time finally in very small letters at the top itll say something like "low battery indicator on". After doing this and holding the power button again I then plug it back into charge and starts charging as normal. Has anybody heard of this?