I did a clean installation of Vista Ultimate 32bit, which everything is working fine. In the device manager there are 2 !, one for the network controller and one for the sm bus controller. So I tried installing the driver from the cd that came with the ECS GF7100PVT-M3 motherboard which uses the Nvidia Nforce 630i/Geforce 7100 chipset. And once it finishes and windows restarts, it will never boot back into windows, it always gets a BSOD referring to absedrv.sys has caused a problem. So i have to boot into safemode and restore to a previous restore point, as trying to uninstall the nvidia drivers will not resolve the problem. So I did another clean installation of vista and downloaded the latest drivers from Nvidia and still the same thing. For right now I did another clean install of vista and only installed the display driver and the network driver, and the system works fine, the problem is the sm bus controller is still listed in device manager. Any help with this issue is greatly appreciated.