qt5 - QtQuick application starts in a client machine but not in another

Question

I have a QtQuick application based on Qt5.1 that starts on my machine (developer-WIN7) and on another (client-WIN8) machine but not on another client(WIN7) (there is no errors) ?

the previous version of my app which uses Qt5.0.2 works good on the same client.

Have you an idea of what the problem is how can i find the problem ?

Thank you.

Edit: I have deleted the grafic driver and the application is opened but there is a blank screen.