24.11.2012, 15:50
Could be a lot of things. Have you checked if the process is running in the background? Do you have the latest DirectX and video card drivers installed? Does your GPU support the needed DirectX? It's probably at least Dx10, so you need at least Windows 7 IIRC.
Last but not least, it it a legal copy?
Last but not least, it it a legal copy?