A black screen When a game is runned

[PSTQ]

Hi, fellows. I have the same problem. But I'm pretty sure the hardware is not the problem. Maybe the configuration of my PC, but I installed the last version of DirectX for XP, the 9.0 c and the latest driver for my graphic card.

My specs are these ones :

OS : Microsoft XP Professionnal SP 3, 32bits,
Motherboard : Asus M2N32-SLI Deluxe
Processor : DualCore AMD Athlon 64 X2 Black Edition, 3215 MHz (16 x 201) 6400+
Memory : 2GB of DDR2
Graphic Card : Nvidia Geforce 8800 GT 512 Mo

I wonder why I get this black screen when a game is runned. I think it shouldn't be such a mess to make dolphin work. So, I was wondering if the OpenGL properties of my graphic card couldn't be the problem.

So please, if you have an idea of the problem or if you know a topic I can browse to find the solution, please, let me know.

Thank you. =)