So when your in the garage, you've pressed the space bar to leave the pits, and its hit the R button.
I had this problem. Easily press A and Space, and you should get up to first gear. But the problem is the PitStop bug. Check GPxPatch, and de-check the Fix Pitstop bug. If it is unchecked, then try checking it.
I'm unsure what you're meaning about TV Cams? Do you play the game from the track cameras? Or are you referring to T-Cam. If its T-Cam your after, just press the right arrow key on the keyboard, and it should pop you from cockpit view to t-cam.
Any other questions, dont hesitate to ask. :0)