This is what I tried. I just bought a new ecs motherboard with the via chipset. I went to ww.viaarena.com and downloaded the 4.35 drivers. I then loaded the agp driver by itself in turbo mode. I then set "cacheman" for 3d games, I don't remember where I got the program, but it changes the disk cache. When I was having trouble, I had it set for "home computer". Anyway, the next time I tried to install 1.3 from 1.2, it worked great. Good luck