My ipod is corrupted

Well i ordered a new battery from ifixit, which should be here soon.... i hope. And i bought a iPod wall charger. Upon connecting the iPod to the wall charger, it started charging and came on. (Before in my last Question i said it wouldnt come on being hooked up to the computer.)

And now it starts up and it has everything on it, before it would erase everything. Which is a surprise since it has been doing that for a while. ( Which also i mentioned before in my first Question) But i noticed that shaking it there was a rattle inside the iPod. Not a real hard rattle, but i rattle non the less.

Also when i connect it to my computer it says its a corrupted and to restore. Any advice?

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