IPod 4th Gen Being recognized on computer as "Unknown device"?

I have no idea what has happened. I believe the other day I may have accidentally unplugged my iPod before it was done recognizing it so now my computer keeps saying "USB not recognized" whenever I plug it in and won't show up on my iTunes.
I've tried to uninstall the driver, uninstall and reinstall iTunes, update iTunes, and I've done just about everything that Apple suggests to do. So I have no idea what to do with it now... Help please? I can give more details as needed.
Plus I've restarted my computer and iPod countless times today. Any help would be greatly appreciated. Thanks.
I do have iTunes updated to the the newest one, as I just reinstalled it today and my iPod is updated with the new iOS 6. If that might help any...?

Security Software and Related Troubles
http://support.apple.com/kb/TS3125 Basic Troubleshooting
http://support.apple.com/kb/TS3297 Advance Troubleshooting
Disable Security Software like Antivirus, Firewall, and Anti-spyware programs. Many have to be completely removed before itunes will work. iTune is responsible for installing the USB driver file. Your software is blocking it or corrupted itunes. You may need to re install itunes after disabling all security software, do no reenable until device connected and recognized.
Reinstall itunes http://support.apple.com/kb/HT1923 http://support.apple.com/kb/HT1925

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- Try manually placing the iPod in recovery mode. For recovery mode see:
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Make an appointment at the Genius Bar of an Apple store.
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Head over to the "Connecting Fifth Generation iPod to Windows" forum.
You'll get better help there.
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New 3rd Gen. 4 GB iPod Shuffle not being recognized by computer or iTunes

Hey everyone, I've read some of the other posts here on this thread about other people having problem getting their computer to recognize the new 4 GB iPod Shuffle when plugged into the USB drive, and it seems like I am having a very similar issue. I just received my iPod in the mail a few days ago and tried plugging it into the USB and got NO response whatsoever from my computer or iTunes. I am operating with Windows XP (Service Pack 3) on a Dell Inspiron Intel processor, 2 GHz with 3 GB RAM, with iTunes 8.1 (just updated). When I put something in my USB usually I hear a noise (sounds like DO-do ha) which tells me that my laptop recognizes whatever is plugged in, and usually I get a little box in the bottom right hand part of the screen that says it's been plugged in. I didn't get any of this when I plugged it in.
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I do have one guess about this though..I also have an 80 GB iPod 5th generation that I've used for over a year now for my car and that plugs into the USB fine with its respective cable and is recognized by iTunes..my question is, can my iTunes only recognize one iPod at a time? Does it reject the shuffle because iTunes is only allowed to sync to one iPod per account? If this is true, is there a way around this so it can sync both, or can I have two iTunes accounts on the same computer? But why does the computer not even recognized it when plugged in? Hopefully it is just the cable that is damaged and not the device..wow this was long, but any advice would be greatly appreciated, thank you!

GTEagle05 wrote:
I do have one guess about this though..I also have an 80 GB iPod 5th generation that I've used for over a year now for my car and that plugs into the USB fine with its respective cable and is recognized by iTunes..my question is, can my iTunes only recognize one iPod at a time? Does it reject the shuffle because iTunes is only allowed to sync to one iPod per account? If this is true, is there a way around this so it can sync both, or can I have two iTunes accounts on the same computer? But why does the computer not even recognized it when plugged in? Hopefully it is just the cable that is damaged and not the device..wow this was long, but any advice would be greatly appreciated, thank you!
According to http://support.apple.com/kb/HT1495
iTunes for Windows does not support having multiple iPods *connected simultaneously.*

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See:
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Start here:
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Hi
You're right, you're not the only person having this problem. If you don't mind though, could you just stick to bumping the other thread? I'll get you the link, one second.
http://discussions.apple.com/thread.jspa?threadID=1307897&tstart=15
Thanks!

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Did you check your model here?
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Try here:
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Many people are reporting problems with connecting there fifth-gen iPods after the update to iTunes 9. I had the same problem, and when I downgraded to iTunes 8, everything worked again.
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Downgrading iTunes:
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Likely this:
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Error 2, 4 (or -4), 6, 40, 1000, 9006
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