MathMathMath

Hello, I am having this recurrent problem with my personnal computer (Windows 7) I tried with several versions of Cura (13, 14, 15) but it is always the same: when I click on the icon in the task bar I only get the splash screen (blue square with the name) and then nothing happens, if I cliks on the blue square it dissapears and that is all. Maybe it is a python problem or maybe cura is getting stuck by some other program I installed in the past but I don't know the way to get that kind of information. It's driving me mad, can anyone help me please ?? Thanks in advance Math