I am in need of help. I have just upgraded my motherboard, CPU and memory of my system to the following spec:<br> <br> MotherBoard: ABit KG7 686B<br> Chipset: Via 686B<br> CPU: AMD Athlon 1.4Ghz<br> Memory: 4 x 256Mb DDR DIMM's<br> <br> I have performed a clean format and reinstall of Win98 on my HDD. On<br> attempting to setup my 3DFX Voodoo 4500 AGP, my system detects and installs the drivers for it, but not correctly. I can see in device manager that the Voodoo board has been detected and has problems with the drivers, i.e. I have the little yellow exclamation mark on the Voodoo 4500 entry in device manager, and I can only manage to get it running in bog-standard VGA 640x480). I have used the latest drivers for both the motherboard and the Voodoo 4500, which I downloaded from the relevant websites, but this did not help. I have performed an analysis of my system using SiSoft Sandra diagnostic tool, and it informs me that my Voodoo board does not support "PCI Bus Mastering" which seems to be enabled on my system. I know there is nothing wrong with my Voodoo card, as it was perfect in my old system. I have also tried adjusting AGP settings in the BIOS, such as AGP Aperture Size, but without success. This lead me to flash my motherboard BIOS to the very latest level, release date 10th Sep 2001, still with no success.<br> <br> Any help at all would be great.