Q: how do I fix my itunes when it "stops working"

Hello kiiillacam,

Thank you for providing the details of when iTunes becomes unresponsive.  I found an article with steps you can take to isolate and troubleshoot an issue like this (click on the article for your version of Windows):

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

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

iTunes for Windows Vista, Windows 7, or Windows 8: Fix unexpected quits or launch issues

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

Thank you for using Apple Support Communities.

Best,

Sheila M.