It's possible the object you have loaded is very small or distant. What is your camera position? Objects are usually loaded at 0,0, the coordinate origin. If your camera is far from this point then the object is likely to be too small to see. Move your camera closer and see if rendering works then. Remember to press the "Set camera"/"Copy to current camera" button (hotkey: Enter) before rendering.
If you continue to have problems, posting a screenshot and/or TGD would be helpful.
- Oshyan