First:
You should at least say what game you are talking about.
(Well, taking a look at your problem description, and thinking about that I had the same problem, too, I guess you're talking about FF7
)Second:
Yes, you are missing a codec.
The reason why the screen stays black when you start the game is that your pc is not able to play the Square® intro. The reason why it stays black after selecting "New Game" is that you pc is not able to play the game intro video.
Unfortunately, I don't remember which codec you should install...
Use the
search function and search for "codec".
Good luck.
- Alhexx
- Edit -
At least I see that you are able to use the

button...
