Bois (and windows) is only detecting that I have 512MB Ram installed when I have two identical 512MB ram sticks installed. I've swapped the sticks around and both seem to work fine. I only just realised this today, but I do recall it working a few months back when I installed the RAM originally. I can't recall flashing the bios in that time. Is there some sort of setting that in the bios that I may have reset accidently? Cheers.