Mew White Macbook accepts 3GB Memory Upgrade but NOT 4GB Upgrade

Discussion in 'Mac Basics and Help' started by bruceaparry, Feb 25, 2009.

  1. bruceaparry macrumors newbie

    Joined:
    Feb 25, 2009
    #1
    I have just taken delivery of a new white Macbook and I upgraded HD to WD Scorpio Blue 500 GB HD and memory to Corsair VSA4GSKIT667C4 Mac Memory 4GB 2 X 2GB PC2-5300 667MHz200 -Pin SODIMM for apple laptops.

    It would not work even after correctly reinstalling the new memory a number of times

    I decided to put back the original memory but by mistake I installed one old dimm and one new dimm and the computer then installed Mac OS X on the new HD and works OK.
    Info shows 3GB of Memory = 1 x 2 GB and 1 x 1 GB.

    Why will it not accept 4 GB?
     
  2. velocityg4 macrumors 68040

    velocityg4

    Joined:
    Dec 19, 2004
    Location:
    Georgia
    #2
    Did you try swapping the 2GB Dimm that is working in there with the other module you accidentally left out?
    It could just be that the other module is defective.
     

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