If you receive the "Service 'iPod Service' (iPod Service) failed to start" error message, you have a conflicting component that's preventing the iTunes desktop client from recognizing the connected iPod. You must remove all Apple software and components, then re-install the iTunes software before trying to connect your iPod again so you can ensure conflicting components are completely removed from your system.
Any of the following Apple components on your computer must be deleted as the first step to resolving the error you're receiving: iTunes, QuickTime, Apple Software Update, Apple Mobile Device Support, Bonjour and Apple Application Supports. Removing these components is necessary because a corrupt file or component from the Apple suite of software creating a glitch that doesn't allow the iPod to properly connect to the computer or the iTunes client. You can see the list of programs that can be uninstalled on your computer by opening the Start menu and then clicking "Control Panel | Programs and Features | Uninstall or Change a Program."
Verify Software Removal
After removing the various software components, verify that each piece of software was successfully uninstalled. You can do this by visiting the Program Files directory on the same hard drive that the Windows operating system is installed on. Verify each of the following folders were removed:
C:\Program Files\Common Files\Apple
Manually delete any folders that weren't removed by right-clicking the folder and then selecting "Delete." Additionally, go to the Windows folder on the primary hard drive and delete the QuickTime and QuickTimeVR folders from the System32 directory.
Install Latest ITunes Version
Rebooting your computer after uninstalling the necessary programs allows a fresh copy of the Windows Registry to be loaded into your computer's memory. After rebooting the computer, download and install the most recent version of the iTunes software from apple.com/itunes. Using the most recent version of the iTunes software ensures the highest level of compatibility with your computer and your iPod, as older versions of iTunes have compatibility issues with newer operating systems and older iPods.
The error for the failed iPod service should be fully resolved at this point and it's now safe to connect your iPod to the computer using the USB cable that came with the device. Before connecting the device, launch the iTunes desktop client, then plug in the iPod and wait for the software to recognize it. Because the iTunes settings were restored to the program's default, you'll need to reapply any personal settings and replace any content that was in the program, such as music and movies purchased from iTunes or loaded to the program. If you purchased the content from Apple's App Store, you can re-download the content at no additional cost. Any personal files you loaded to the device will need to be reloaded to the program manually.
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