7th generation ipod nano won't turn on

So this is what I was doing before my ipod went black: I was listening to a podcast, then paused it and turned it off. The next day, I went to go turn it on. However, I pressed the home button accidently and it was already on, and playing some music/podcast. I don't know what it was because after that, the screen immediately went black. I tried to turn it on but it didn't do anything. So, I charged it for about 2 hours. I pressed the hold button to turn it on again, but it wouldn't do anything. It doesn't turn on. I just got it like a week ago. Also, when I plug it in to my laptop or desktop, a message pops up saying that it is not recognized. Any help is appreciated!