Menu troubles

[poussin1]

Hello !

As a surprise, my main problem is not on FPS but on screens "MENU". I am unable to get clean menu : Whenever I would like to change an option or just to get a mission on, I must click all around the screen to get the details of menu.

I can launch a mission and have a valuable good time, but when I want to go to option screen, It is still the same. I reinstall my game twice and STEAM is telling me that everything is all right, but I still have got this trouble. I had disabled WINDOWS AERO but nothing is doing. I am lost !

Can somebody help ? My computer is a dual core 2.13, 4 GB ram, NVIDIA GE 340, with windows 7 / 64 bits. I have no problem with the simulation itself but only on the different screens of menu.

Thanks in advance.