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Early 2011 Model: A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor

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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.

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What happens when you pull one of the modules out does Windows work then?

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I changed msconfig then it worked :-) Thanks

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Windows 7 pro can handle 192GB of ram if it's the 64bit version. The 32 GB version can only handle 4GB of ram.

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