i have 2 x 512 corsair xms 3202 400fsb on an athlon 64 system, using an abit mobo, i cant get the system to boot up with both stix in, with either one of the stix in it starts up fine, i know it will work cause my brother had the very system and he gave it to me, and he was running both stix. what happens when i boot it up is i get this alarm thing going off 2 tone alarm in 2/2 increments. can anyone tell me what im doing wrong or what would be a definite fix for this?