Windows XP and Nvidia GTS 2 (OpenGL / Half-Life) Problems

Many of you may have noticed a stability problem with XP and Nvidia GTS 2 Cards
I have managed to fix it on my machine.
Using the latest drivers from

  1. Turn off antialiasing
    (settings/advanced/Geforce2GTS/additional propeties)

  2. make sure you have nvopengl.dll in your

I’m not saying this is perfect but i can now play Half-Life in Opengl and the system is much more stable.