The game doesn't launch even on powerful hardware.

Hello everyone! I bought the game with the Tribes of the East expansion through Steam. My processor is an i5, and my graphics card is a GTX780 with 3GB of memory. My operating system is Win7Pro. The problem is that the game doesn't launch at all; I get a black screen and then it restarts. I have the latest drivers installed. I've tried all compatibility modes, but nothing helps. Running it as an administrator also doesn't work. It runs perfectly on a weaker machine (a laptop with a Core2Duo). Has anyone else encountered this problem?