Ipod not recognised by Windows, USB device not recognised

Hi hope someone can help
I have recently received my ipod back from Applecare who have sent the ipod back in ' working order ' but it will no longer be recognised by my windows. It says USB device not recognised and i cant find, nor will it install drivers that i located on the ipod updater etc.
I have tried several methods on this forum but none seem to work.
The letter from mycare says the iPod is formatted for a computer operating Mac OS X. Although i stated wi use Windows. But the leter states this can be changed bu installing the updater, but this wont make a diff as comp still wont regonise the device after i have followed there instructions. Any advice?
Thanks

I'm not really up on the complexities of the Windows OS but try this tip I picked up a while back, hopefully it might help.
"USB Device not Recognized in Windows".
1. On the Start menu, click Control Panel.
2. Double-click the System icon.
3. Click the Hardware tab.
4. Click Device Manager.
5. Scroll down the list of devices to the Universal Serial Bus controllers
6. Click the plus icon next to the Universal Serial Bus controllers.
7. Double-click one of the indented USB Root Hub entries.
8. Click the Power Management tab.
9. Deselect the "Allow the computer to turn off this device to save power" option.
10. Click the OK button at the bottom of the window.
11. Restart the computer.

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Hello,
Please read the following, and try the steps provided by Buegie
http://discussions.apple.com/thread.jspa?messageID=2001071#2001071

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I got my ipod in May for my birthday and its worked pretty fine up until now. I went on holiday for two weeks to France where I went running everyday with my ipod and it worked fine but on the journey home in the car it wouldnt work and froze. Now it wont charge and is unrecognised on my pc and says that there are no drivers installed for this Device when it before worked fine. I have tried everything that has been mentioned on every discussion I could find and it still isn't working. It's driving me crazy! Could any1 help please? All suggestions appreciated.
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Desparately hoping for some assistance here...
I got a used 2nd generation nano that charges properly and plays the songs that are already on it. When I try to hook it up to the computer I get a +USB Device not recognized message: "One of the USB devices attached to this computer has malfunctioned and Windows does not recognize it"+
I am getting this same msg on an older PC running Windows XP and all the latest Service packs and I'm getting the same message on a newer PC with Vista.
Both computers recognize my 3rd generation nano and ipod mini.
I tried the 5Rs. I did the Windows update and downloaded the latest itunes.
I also tried various combinations of resetting (menu + select) while I was attaching the ipod to the computer. I've tried several different USB cables, but I know the cables and the USB ports are fine because the other ipods work with them and this ipod does charge when connected to the PC.
Based on some of the other postings I tried opening the Device Manager and the ipod shows up under USB controllers as "Unknown Device." Windows obviously can't find the driver for it in order to update.
Does anyone have any ideas here? Is there a way I can manually update the driver file?
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Okay, this is exactly what the popup says:
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You may be exceeding the total power available on the USB bus. If that is the case, one solution may be to get a self-powered USB hub. Connect the iPod and other devices that are frequently connected and disconnected on-the-fly to the hub. This will also reduce wear-and-tear on the more valuable USB ports on the computer. You can always get another $20 USB hub. Make sure it is the type that has its own power supply.

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Attachments:
Untitled.png ‏50 KB

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Ipod not recognised by Windows, USB device not recognised

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