Black screen issue ingame

Hey guys, I searched for a similar topic but I didn´t find one, so Im posting this :
Every time ( it´s almost a week now ) I log in Crossfire and join a match, I only see the score bar, the radar and the player tags and maybe a light or two but the rest is black. The sound is flawless, I can move and shoot and whatever action but I see nothing ( except for the mentioned things ).
I tried un- and reinstalling, didn´t work. ( and yes I did a clean uninstall )
Anyone knows how to solve this ? Thanks in advance.

Sys specs :

win xp sp3
2 gb ram
intel 2.8 ghz
nvidia fx5600