White screen on my iPod - tried reset but no success

Hi - I have an iPod nano 6th gen that was working but had a bad battery. I replaced the battery but when testing the screen now all I'm getting is a blank white screen. Weird because I wasn't having any issues with the screen before. I tried holding down the power button and volume down button, but didn't have any success, still only powers to a white screen. Thanks in advance for any help!