ipod not being read by computer

My computer (PC) isn't reading my iPod nano, but other computers are. In the mean time, my computer is able to read my mom's iPod nano (they are the exact same thing). I've tried different chords, I've updated and restarted my computer, but I don't know what's wrong with it. It's quite stressful because I've been trying to update my iPod for a while and haven't been able to.

Thank you