My Ipod won't go past the apple screen

I unplugged my ipod from the computer and it was stuck on the "eject" screen, so I reset it, and now it just keeps reseting itself. It won't go to the main menu screen, it just keeps reseting and going back to the apple. I tried putting it in disk mode and restoring it, and it seemed to work, but then it just went back to resetting. And I tried to restore it again in disk mode, but now it says "Ipod cannot be found"