Q: my ipod touch is broken

Is it this problem?

If the Slide to Upgrade screen won't go away after you update to iOS 9

If not:

Try the following. Not the if y have to Restore the iPod the iPod will be erased:                                                                       

- iOS: Not responding or does not turn on           

- Also try DFU mode after try recovery mode

How to put iPod touch / iPhone into DFU mode « Karthik's scribblings

- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.

- Try another cable                                                       

- Try on another computer                                                       

- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.

Apple Retail Store - Genius Bar                                     

Is anything showing on the screen? If not then draining the battery take days and days and usually does not work