
Completely remove iTunes and QuickTime

Note: Songs you purchased from the iTunes Store or imported from CDs are saved in your My Music folder by default and are not deleted by removing iTunes.
1. Quit iTunes.
2. Choose Start > Control Panel.
3. Windows XP and Windows 2000: In Control Panel, open Add or Remove Programs.
Windows Vista: In Control Panel, click Uninstall a program. Alternately, in Classic View of Control Panel, click Programs and Features.
4. Select iTunes from the list of currently installed programs, then click Remove or Uninstall.
5. In Windows XP and Windows 2000, when asked if you would like to remove iTunes, select Yes.
6. In Windows Vista, if your permission is needed to continue, click Continue.
7. After uninstalling iTunes, do not restart if you are prompted to.
8. If other entries were present for iTunes remove those as well.
9. In Add or Remove Programs or Programs and Features, remove any iPod Updater applications that are listed in the same fashion as iTunes was removed.
10. In Add or Remove Programs or Programs and Features, remove any QuickTime installations that are listed in the same fashion as iTunes was removed.
11. Restart your computer.
12. After the computer restarts, open Local Disk C: in My Computer/Computer or whichever disk programs are installed on.
13. Open the Program Files folder.
14. Right-click the iTunes folder and select Delete and choose Yes when asked to confirm the deletion. Note: This folder may have already been deleted if iTunes was successfully removed in steps 1-8.
15. Right click the iPod folder and select Delete and choose Yes when asked to confirm the deletion.
16. Right-click the QuickTime folder and select Delete and choose Yes when asked to confirm the deletion.
17. Delete the QuickTime and QuicktimeVR files located in the C:\\Windows\\system32\\folder.
18. Right-click on the Recycle Bin and on the shortcut menu, click Empty Recycle Bin.
19. Restart your computer.
20. Install the latest version of iTunes from
http://www.apple.com/itunes/download.