iPod 2G won't boot at all?

I have an iPod that I got a few years back. I've been having this problem for awhile but I am in serious need of the iPod now because it has screenshots that will prove my innocence in a matter with my girlfriend. Anyways, the problem is that when I plug it into a computer, it will go to the little red battery charging screen and then it will go to the pitch black screen with only the white apple logo. It will stay there for about 60 seconds and then it will shut off and go completely black, then it restarts the process again and again. Of course, I can't restore it or do anything with iTunes because it won't even power up enough to go to the lock screen. Not that I would restore it, as when you restore it you lose all data stored on the device.

Anything you guys can do to help would be greatly appreciate.