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  1. #1
    4GB of RAM no recognized by MacBook

    Member Since
    Oct 19, 2009
    Posts
    3
    Specs:
    Macbook 4,1 2.1ghz, 4GB, 250GB HD
    4GB of RAM no recognized by MacBook
    Hey,
    Over the last week I've tried installing 4gb of RAM in a friends MacBook (same specs as mine, MacBook 4,1, 2.1ghz Core 2 Duo, Snow Leopard Installed). I got the shipment, installed the two new sticks, and turned on and nothing happened except the sleep light turned on and the hard drive spun...that was about it. So I decided to take them out and try the two sticks from my Macbook in his, it booted, the apple logo shinned, and system profile showed 4GB of Ram. Tried one stick of mine and one of his and it worked. Then tried the other one of his with mine and it worked...So, assuming something was wrong with the pair, he returned them for a new set. Recieved them in the mail, stuck them in and again same problem.

    Does anyone have any idea what might be going on, I'm lost. The sticks he bought were Memory Master - 2-Pack 2GB PC2-5300 DDR2 SoDIMM , identical to the ones in mine. I'm thankful for any ideas.

  2. #2
    4GB of RAM no recognized by MacBook
    Sur3Mac's Avatar
    Member Since
    Aug 03, 2009
    Location
    The Netherlands
    Posts
    1,563
    Specs:
    Late 2011 MBP 13" i5/16GB RAM,Early 2007 MB white 13", 2x TV 3rd Gen, ᣦ
    Is the rest of the MB identical to yours as well?

  3. #3
    4GB of RAM no recognized by MacBook

    Member Since
    Oct 19, 2009
    Posts
    3
    Specs:
    Macbook 4,1 2.1ghz, 4GB, 250GB HD
    Yes, same model number, bought it around the same time (June 2008)

  4. #4
    4GB of RAM no recognized by MacBook

    Member Since
    Feb 10, 2008
    Location
    Dallas, but school in Arkansas
    Posts
    92
    Specs:
    15" MBP 2.2 2GB
    Wow... That's a tough one. Hope someone can offer some insight. Good luck with it..
    15 inch MacBook Pro 2.2 GHz Core 2 Duo w/ 3GB ram and 160GB 7200 RPM HDD.
    Apple OS-X Snow Leopard / Boot Camp - Windows XP

  5. #5
    4GB of RAM no recognized by MacBook

    Member Since
    Apr 27, 2009
    Location
    Australia
    Posts
    10
    Specs:
    iMac 27" , Macbook 13" Unibody 2.4MHz , iPhone 4S
    I had tried 3 sets of Corsair 4Gb memory , no good until I purchased a set with Hynix Samsung chipsets. Did you try to run his memory set in your machine ?? Did your memory set run OK in his machine ?

  6. #6
    4GB of RAM no recognized by MacBook
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    31,467
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    Quote Originally Posted by blaklablesk8r View Post

    Does anyone have any idea what might be going on, I'm lost. The sticks he bought were Memory Master - 2-Pack 2GB PC2-5300 DDR2 SoDIMM , identical to the ones in mine. I'm thankful for any ideas.
    Where is the ram purchased from? Are you guys 100% sure it is ram compatible with the laptop in question?

    My favorite place to purchase Macintosh compatible ram is:

    OWC

    But these guys seem to be a favorite of folks as well:

    Crucial

    HTH,

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  7. #7
    4GB of RAM no recognized by MacBook

    Member Since
    Oct 19, 2009
    Posts
    3
    Specs:
    Macbook 4,1 2.1ghz, 4GB, 250GB HD
    RAM is something called Memory Master, it was from Bestbuy.com. Didn't try it my machine yet, but I figured the results might be the same. I would blame the budget brand but I got mine from the same spot (hence where he get the idea) I just find it weird they work with other RAM, of the same brand, just not with each other. Does anyone know of a reason why this might happen?

  8. #8
    4GB of RAM no recognized by MacBook
    CrimsonRequiem's Avatar
    Member Since
    Jul 24, 2008
    Posts
    6,004
    Specs:
    MBP 2.3 Ghz 4GB RAM 860 GB SSD, iMac 3.4 GHz Intel Core i7 32GB RAM, Fusion Drive 1TB
    One of the sticks might be defective. Just return it and move on.

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