How to fix iPod nano stuck on hold?

Hey! I am trying to look at what is in an old iPod nano 2nd generation that was my older sisters. It is now stuck on hold and I can see the lock icon on the screen. The iPod turns on and charged fine I believe. I have tried to reset it but for some reason it isn’t working even if I hold down the menu and middle button, I don’t think that would really help with the iPod being stuck on hold anyway. I have opened the top of the iPod and taken out the little silver box that has the red switch on it because I read that taking it out has helped other people, but my iPod is still stuck on hold even after taking it out. So, I was wondering if there’s anything else I could do, maybe there’s a wire I could just cut that would get rid of the hold entirely? Please help as best as you can, I just want to see listen to the music on it for nostalgia. Thank you.