i just bought a asus p4b266 motherboard and mushkin 256mb pc2100 ddr ram. i kept getting errors trying to install windows so i finally figured out that i could turn off the cpu level 1 and level 2 cache in the bios to solve the problem. it worked, and microsofts knowledge base said that if turning off the cache fixes the problem then my mother board has a bad cache controller and needs to be replaced. but i also heard form some people that it could be the ram that is bad. which is correct and if it could be either 1, how can i tell exactly which 1 it is so i only have to go thru the hassel of replacing one of them?