Only a grew screen during OpenGL games!!!

If i want to start games like Fakk2 or Alice, my PC crashed and i only see a grew screen!So i must switch off my computer and restart it!
I’ve got a Geforce2 MX(newest Detonators), VIA 4in1 drivers, BIOS:AGP 4x, PIII 500 128mb Ram!!
Please help!!!
cYa Reen