No way to take out the battery that I can tell.
So I spoke with my daughter and she said maybe the plug wasn't in the outlet right. We checked to see if the green light was on on the charging box and it is now. So, the screen shows up again and I believe it probably just needs to be charged overnight. Maybe I didn't have the plug in correctly...don't know.
My daughter reset the tablet by pushing in the reset button with a pin.
That did the trick.
Sorry your suggestion did not help me...never did see a battery.