Ratio problem

[plutomaniac]

If the game crashes at end of the first level when clicking on a door then you have an Intel graphics card which due to bad OpenGL drivers are generally not supported.

If you want to try playing the game with an unsupported graphics card, manually update your Intel HD graphics card drivers to the latest possible from Intel using the Have Disk Method.

If you want to reset game settings and thus resolution, check Problem A3 of the Troubleshooting Guide.