HELP!!! iPod is stuck on black screen and wont work!!!

I've had my nano for 2 years and it's gotten locked up and I pressed buttons until it worked, but never like this! For the past 3 days my ipod has been stuck on a black screen, and I made sure it wasn't on hold. I've been plugging it into EVERYTHING!! My iHome, my wall plug-in, and my computer but it never works! When I plugged it into my computer, it didn't even detect an ipod plugged in! After that I hit random buttons for half and hour. So, before I throw it out the window in a fit of rage, any advice?!