Hi All, So I Have 2x512 Mb Samsung Memory sticks. Both are labeled: 512/533/648 Now, The one I have currently in the RAM slots will allow the computer to boot up, however the other, will not!, they wont boot as dual channel, and while it COULD very well be a faulty stick, I've replaced the RAM stick 2-3 times now and I am still getting the same problem. I'm currently updating Bios to see if that makes any diffrence whatsoever, but could there be any other problems besides faulty RAM?, like the board doesnt like Samsung or something?... Thanks Very Much, In Advance!