Let me interject:
You have a very weak computer for Archicad.
Not only are you flying with a minimum RAM - 512 Mb (should be 2Gb), but your video card at 128 Mb is minimal for the OpenGL 3D rendering function.
Can you render 3d with the Internal Engine? If you make the 3D window tiny and turn off all OpenGL features, will it work?
No report exists on the compatibility of your card with Archicad, but some users report trouble synchronizing the 2d clock speed with the 3D clock speed, so this could be a simple adjustment of the settings.
Dwight Atkinson