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Original post by: Cameron Hen ,


Hello Geoff,

Most logic boards will contain the part number on them in some location. I personally have not worked with Macbooks so I am unsure where this would be. The most likely cause to your problem would be a wrong part number meaning you have the wrong amount of ram or one or more of your ram modules on the board are faulty. Do you know what processor is on your current board? We can use that info to help diagnose the problem. You can find this info in your system information panel in OS.