This isn't necessarily a Student Forum issue. Don't be timid. Post in a more appropriate category next time.
This is possibly two unrelated problems at the same time - confusing.
Turn on your error report to see error messages.
To test for flaws in the 3D window, eliminate the possibility that the camera is aimed incorrectly by making a parallel projection of some kind. You'll see everything in the 3D model at once. Then establish a new camera in the plan that you know is correctly aimed. Select that camera and make a view.
Sometimes, the thing gets "Stuck." It thinks there's a model redndered and it is wrong. Close the 3D window and rebuild the model.
Dwight Atkinson