I found the problem! i had put em in the yellow, not black slots! i think the reason only one stick went mad, was cos the one which was fine, just wasn;t inserted, and to get the other stick in, i had crushed the port. i have a feeling i installed ddr2 sticks in a ddr slot XD 'tis fine now, and pc is running fine, oced to 3.2 ghz from 2.6 stock!