I purchased CORSAIR XMS 2GB (2 x 1GB) 184-Pin DDR SDRAM Dual Channel Kit System Memory and when i put in both chips the system won't boot. I can leave one chip in the system and it will boot but only 1 of the 2 chips boots alone. The second chip failes to boot even when it's by itself. These are new chips. Should I assume the one simm is bad and I need to return it?