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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

MacBook - 4GB of RAM no recognized by MacBook


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blaklablesk8r

 
Member Since: Oct 19, 2009
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Mac Specs: Macbook 4,1 2.1ghz, 4GB, 250GB HD

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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.
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Sur3Mac

 
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Is the rest of the MB identical to yours as well?

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blaklablesk8r

 
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Yes, same model number, bought it around the same time (June 2008)
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Kevin6432

 
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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
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waynewh

 
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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 ?
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pigoo3

 
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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

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
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- Apple Battery Info. Battery
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blaklablesk8r

 
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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?
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CrimsonRequiem

 
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Mac Specs: MBP 2.3 Ghz 4GB RAM 860 GB SSD, iMac 3.4 GHz Intel Core i7 32GB RAM, Fusion Drive 1TB

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One of the sticks might be defective. Just return it and move on.
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