Ipod Photo problems

After having my Ipod photo battery replaced by ipoddoctor.co.uk my ipod is not working correctly :
Its showing that it needs to be plugged in to wall via the usb adaptor but when you do nothing happens??
Also when I received it back it loaded up with a windows folder not the ipod software ?
Does anybody know where I can download the correct ipod software to get it running correctly again as it is so frustrating as I use it for backing up music, photo documents etc

Thanks in advance for any feedback

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