Hi, can anyone answer this question for me? I have recently purchased an extra 256mb of DDR Ram for my system. Windows is still showing that i have only got 256mb and not 512mb. Done some tests with Dr Hardware and SySoft Sandra and they are showing that i have 512mb. In bios it is also showing 512mb, so the memory is being accepted and working. On my motherboard there a 3 banks available to me. In SySoft it is saying that only one bank is being used and the other two are empty. I have swopped the sticks around and it always shows one mem bank empty. Any advice or help on this? Thanks.