Hello Boonie08,
I understand that your iPod nano is exhibiting some strange behavior momentarily after first powering on. The first troubleshooting step that can help stabilize your iPod nano would be to reset the device.
To reset your iPod nano (7th generation), press and hold both the Sleep/Wake button and the Home button until the screen goes dark. After a few seconds, you'll see the Apple logo and then the Home screen.
To reset your iPod nano (6th generation), press and hold both the Sleep/Wake button and Volume Down button for at least eight seconds or until you see the Apple logo. You might need to repeat this step.
If you still need help, follow these steps:
- Plug your iPod into a power adapter and plug the power adapter into an electrical outlet.
You can also plug your iPod into your computer. Make sure that the computer is on and isn't set to go to sleep.
- Try to reset your iPod again.
Learn how to reset your iPod - Apple Support
Cheers