Hello, I purchased Corsair ram (2x4GB) CMSA8GX3M2A1066C7 from Amazon.com. According to the description it "Works with any Mac computer that supports 4GB DDR3 SODIMMs". My macbook supports 6GB officially (8GB with the firmware that I am running). However when I inserted it I only get three beeps. I tried inserting only one stick in both of the slots but that didn't help. I also tried it with both sticks but that does not work either. When I plugged in my old ram it worked perfectly. I also tried 8GB ram from Crucial with the same specs (CT2CP51264BC1067) and it also worked as expected. I tried it with my HP laptop (dv6) but I got blue-screen when booting (IRQL NOT LESS OR EQUAL). The same crucial ram works fine there so it is definitely Corsair fault. Has any of you experienced a similar issue? Is there anything I can do? I already tried PRAM reset. Thank you in advance.