OpenGL no longer Supported


I have NVIDIA GeForceFX 5200 Ultra on a windowsXP box. Before something happened( dont’ know what) I played CS in openGL mode and I did some programming with openGL. But now when I run my gl programs they are just white screens, also CS can only run in directX.

I updated my graphics card drivers, and downloaded the gl libraries again but I still have a white screen when I try to access openGL programs.

Has anyone heard of this before? Even better, has anyone heard of how to fix this?