If you're running a version of iTunes, you'll need to run this command "%CommonProgramFiles%\Apple\Apple Application Support\defaults.exe" write com.apple.iTunes AutomaticDeviceBackupsDisabled -bool true.
If you're running a version of iTunes, you'll need to run this command "%CommonProgramFiles%\Apple\Apple Application Support\defaults.exe" write com.apple.iTunes AutomaticDeviceBackupsDisabled -bool true.