Q: itunes will not launch i have tried all fix it

Hello cooneykel,

Thank you for using Apple Support Communities!

Without knowing what you have tried already, I would recommend taking a look at one of these articles depending on your version of Windows.

iTunes for Windows Vista or Windows 7: Troubleshooting unexpected quits, freezes, or launch issues

http://support.apple.com/kb/TS1717

Or

iTunes for Windows XP: Troubleshooting unexpected quits, freezes, or launch issues

http://support.apple.com/kb/TS1421

All the best,

Sterling