Why is it's screen black?

I accidentally dropped my sisters Nikon coolpix camera when I was walking down the stairs and all of the batteries spilled out. She used this camera only two or three times and the batteries are mostly new, so I know it's not because it's old or the batteries aren't working. When we turned it on, it turned on and made the sound and everything, but the screen was black and had a little white light on the bottom. We tried using the other buttons to see if they would show up and it wasn't only the actual lenses part, but only black would show up. Please help ASAP. Thank you!