Make sure that you have the latest System BIOS, Motherboard Bus Mastering Drivers, and AGP Bus Drivers from your Motherboard Manufacturer.
IT IS VERY IMPORTANT THAT YOU VERIFY WITH YOUR MOTHERBOARD MANUFACTURER WHICH AGP AND BUS MASTERING DRIVERS YOU SHOULD USE. These links are provided as a courtesy only. If you download and install the wrong driver, it could cause Windows to not operate properly and/or no longer boot up.
All chipset drivers are here.
If you have a VIA chipset, you can download the most current AGP and bus mastering drivers
here.
If you have an ALI Alladin V AGP chipset, go to: http://www.acerlabs.com click on "drivers" or
http://www.ali.com.tw click on "support."
Voodoo4 4500 and Voodoo5 5500 
