First, make sure your computer meets the minimum system requirements to run the game:
- OS: Windows 98/ME/2000/XP;
- Processor: Pentium III with 733 MHz;
- RAM: 256MB;
- Video Card: 32MB nVidia GeForce Class;
- DirectX compatible Sound Card;
- DirectX 9.1.
If the requirements are fulfilled, update your video card drivers and download and install the latest version of DirectX. After that, uninstall the game and then install it again. Also, make sure that all unnecessary applications are closed.