iPod Nano 7th Gen
Will not come on; blank screen even after charging.
what worked for me in the past, is, to press and hold on the the power button and the home button at the same time, for at least 15 seconds, maybe more. then the apple logo shows up and the iPod should boot
Try to plug it into a computer and then save what you want/Copy. Take it to a store if you want to get some professional help. Because i would think apple would do a better job than i could.