I just bought Corsair 1333MHz Unbuffered CL 9 SODIMM Memory 9-9-9-24 1.5V DDR3 8GB to upgrade my MBP mid2010 from 4gb to 8gb memory. The problem is that if I put both 4gb memory in my mbp, it freeze on startup (Apple Logo). If i only put 1 4gb memory and 1 2gb memory it startup normally. I try this with both corsair memory and they both boot my mac when not together.
I'm currently running Lion, so I guess it's may not be the issue. Is it possible to let me know if there anything to do ? Even the answer is "reinstall OSX"
Thanks for your advise.