new nvidia drivers made opengl vanish???irreversible?

Can u help? I installed nvidia driver 4in1431v on my system and I seem to have lost opengl. If I do sisoft sandra opengl info test it falls over, blender won’t run nor any other gl dependant prog. to compound things I am running win2k on a cb riva tnt m64 card, 700mhz duron,msi via kt133 m’brd with 256mb memory I reinstalled win2k no difference. ps. my creative labs sb 128 sound card has gone on the wonk too

It seems like your system is messed up. Strange that reinstalling Windows did not help. For the OpenGL problem would I get the latest official drivers from nvidia.