Xbox 360 elite Play and Charge kit not working.

Ok. I recently got an xbox elite, and also got COD 6 and Play and charge kit. Play and charge kit i got from a shop.

But the play and charge kit does not work. I've tried everything, but it wont work. I've looked on microsofts website and the article of how to use it, but that doesn't work. When I plug the USB into the computer, the light on the thing that connects to the controller turns green for about a quarter of a second, then goes off. It isn't fully charged, becuase I have been using it and the lights on the controller started flashing, indicating it was on low battery. So it wont charge. Now I can't go on my xbox. I've also tried charging it up by the actual xbox, but that doesn't work either.

Can anyone help me?

Have you tried playing as a wired remote and letting it slowly charge while you are playing? That's typically what I do with mine.