installed 2x4gb ram and it's showing as 2x2gb

Discussion in 'MacBook Pro' started by samrick, Jun 30, 2016.

  1. samrick macrumors newbie

    samrick

    Joined:
    Jun 30, 2016
    #1
    Today I installed 2x4gb of ram in my Macbook Pro. It's only showing 4gb of ram rather than 8gb and when I go into the System Information to check, it shows the two slots with 2gb each, both with status: OK. Is it just not updated from before?? I don't understand.
     
  2. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
  3. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #3
    Remove one of the sticks, then boot up.
    Does it still show just 2GB? Or, does it show full 4GB from just one stick?

    Which model of MBPro do you have?
    What is the memory did you buy?
     
  4. samrick thread starter macrumors newbie

    samrick

    Joined:
    Jun 30, 2016
    #4
    It's a Macbook Pro 13-inch Mid-2012. New memory is Crucial 8GB kit.
     
  5. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #5
    That memory should work in your Mac. I'd suggest trying what DeltaMac posted.
     
  6. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #6
    Try a single stick in either slot.
    Reseat the sticks several times, and boot up while holding Option-Command-P-R. The boot chime will sound. Continue to hold the same 4 keys until you hear the boot chime two more times, then release the keys to let it boot normally.
    Check your memory again.
    You can also boot to your hardware test (boot up while holding the D key.) Run both the standard and extended tests.

    Memory prices have dropped recently, so 16GB is a great choice, too!
     

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