I bought some ram (2x128MB Mushkin High Perf REV2 PC133 222) for my KA7 and Athlon classic. I am having trouble getting the KA7 from PC100 to PC133. Tried using the dip switches on the MB, and also tried using the bios. In the bios it changes the Pci bus to 133/44. I don't have a setting for 133/33. I've tried one stick in all 4 slots, nothing but black screen. Change back to 100/33 and everything is fine. Any ideas???