Z10 not detected on windows 7

Hello !

I have recently bought a new laptop and my Z10 is unfortunately not detected on my computer. The problem is not the wire as I have tried two different types. Even when I activate wifi, I'm not able to detect it. It's a big problem as I have all my music on my Z10. I have tried to install / uninstall blackberry link but no effect. Do you have any ideas ?

Thanks !