Ok, I solved the 2D drawing problem by clicking on Options>View>OpenGL page and un-checking the setting for GPU tessellation as suggested in:
But still, the program crashes immediately using Raytraced display mode. Yes Nathan, I’m sure:
I think it could be related to the video card drivers, but the last time I upgraded my Nvidia I had several computer crushes with blue screen, so I went back before the update… It has to be here the issue