Hey Mindset,

It could just be that you need to zoom out a little bit.


Here is a snap of my test scene where the camera is far away


And here is one where I selected the three main objects and did a fit all "A"


Expand the 3D window, select the objects that you are interested in rendering and then hit the "A" key.

I've also attached my sample file so that you can use it to test on your system.

-scott