Hi i need help, I have a conroe 1333 d667 motherboard and i just purchased 2 x 2gb pc2-5300 ddr2 sdram memory sticks. They both work individually or with one of my old 1 gb rams but when i put both the new ones in my computer doesn't load, or sometimes it starts to load and one time it did load then crashed to a blue screen. My old memory is 2 x 1gb pc2-5300 U-DIMM/CL5...Thats what it says on it. Have i got the wrong memory or do i need to do something in the bios? Thanks!