Problem with iOS 4.3.5 with iPod generation 4

Since i'm using Windows Vista SP2 and iTunes10.4 upgraded my iPod generation 4th to iOS 4.3.5 ,
The iPod kept disconnected from my PC and it said " Unknow Device "
Now i couldn't sync anything from iTunes10.4 except charging the baterry of iPod.
Sometimes even charging also a problem for me now.
So someone can help me~?  ><"

Here is Apple troubleshooting for that symptom.  Just be aware, that you may have a hardware problem or require an appointment at the Genius Bar of an Apple store:
Unable to use Wi-Fi or Bluetooth with iPhone or iPod touch because there's no address listed for the device

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