I just installed a Biostar m7vkq mb w/AMD Athlon XP1800 cpu. I also installed one stick of 512 meg Micron PC133 memory. The problem is, I can't get it to run with the 512mb memory, it will run just fine with two PC100 64mb. I thought the Micron 512 might be bad so I sent it back and got a replacement, but it still will not work with that system. If this has already been posted by someone, I apologize. Any suggestions?