Hello,
when i click to pre-load, the message is :

"Système d'exploitation non pris en charge, vous devez mettre à jour votre système d'exploitation."

I have Windows 8 pro with media center allready updated.

Someone ?

You can search for it right here:

http://answers.ea.com/t5/Crysis-3/bd-p/Crysis-3

If not you can then post it there as this is the offical Answer HQ page related to C3.