Hi I have problem with my Archicad 25 and 24. The 3d view is like in the picture
Hope you have minimum required system configuration with suitable graphic card as mentioned in Archicad Help. If so, then check by any chance the driver files for your display card are correctly installed.
That looks to be a graphic card / driver issue. Do you have up to date graphics drivers installed? Does your computer meet the hardware requirements? (System Requirements – Graphisoft)