Need to know the Make & Model of your Motherboard and what type of Chip set it has (SB9xx, SB800, SB7xx,etc). You can go the Motherboard manufacturer's Support site and download their chipset or you can input your Motherboard's Chipset here : Download Drivers . Go the left menu "Manually Select your Driver" and select CHIPSET. Then input the appropriate Chipset from your Motherboard.