QuickTime problem

I have a problem with QuickTime, it does not work anymore. I tried to uninstall it in order to install the latest version but nothing happens, can not uninstall it completely!

I cleaned the registry database with CCleaner and RegCleaner but nothing happens. Every time I get a message that tells me it is impossible to remove the previous version.

Do you have a solution?

QuickTime Alternative serves a great utility. It solves many of such headaches and a great practice on a PC when you want to install QT.

Thank you Shen for your appropriate reply.