It's an 80gb iPod Classic; It will connect to the PC for only 3 seconds, then it will eject without syncing or charging. I don't want to restore.
I had this same problem a couple of months ago. Then, all of a sudden it stopped. I didn't think any more about it for a while. Then a couple of days ago I tried plugging in a jump drive, and my pc would not read it, it kept ejecting and reloading. I thought it was a problem with my jump drive. Just a little while later, I plugged my iPod Nano into the same USB port and again, it kept ejecting itself. I then tried a different USB port, and both my jump drive and my Nano worked fine.
Worth a try!