Hi, I would to ask what could be the problem of my tegra note 7. sometimes it heats up and drains battery when connected to PC via USB..I connected it to my PC at around 38% and left it without any apps open and wifi turned off hoping that it would charge a little but later upon my checking the battery went down to 16% and the tablet is hot. Please help what could be the cause of this? my tablet does charge normally when connected to the wall adapter or charged connected to the pc while turned off...