Nvidia FX5200 and openGL

Hi everybody
I just bought a Nvidia FX5200 and downloaded the latest drivers, but when I run openGL viewer, I still have 0 % of compatibility between my system anbd openGL. I tried several drivers, but it still doesn’t work.
Does anybody know where the problem can come from, because my graphic card is normally 100% compatible with openGL 1.5 ?
Is there any hardware in my computer taht can cause this problem
Thanks for the answers

There is software that may break OpenGL, Matlab is an example.

Usally OpenGL works right out off the box (since W95B) with proper drivers, unless you do something to break it.