Via cautions not to use the Via AGP driver - use the Microsoft driver instead. My Vue 5 will not even open. Even on a forced install of the Via driver, the Microsoft driver installs. Vue 4 works just fine. Via PT800, gForce FX 5700 (which has the Via chipset AGP driver).P4 2.8, 800 fsb, 1 gig ddr 400ram. Ideas welcome