Can it be the memory model?
May I add another question in this topic ? I have installed 16 gb ram in my macbook. It works fine, except for when I try to run windows 7 Pro in bootcamp. It comes to the login screen then it stops. sometimes it just comes to a white screen. I think win pro7 can handle 192 gb ram so what can be the problem? Can it be the memory model ? I bought Crucial DDR3 16GB 1333MHz SODIMM for Mac.