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Kit Memory

July 6th, 2013

Why won't 4GB KIT memory upgrade work with my Macbook?

I have a white Macbook with 512 MB RAM. It works fine. I bought two 2GB memory chips for it from Crucial.com and when I installed them and turned the computer on the screen stays blank. I put the old 512's back in and it started up no problem. I tried putting in one of the new ones and one of the old ones, turned on the computer and checked the computer stats and the computer was only recognizing the one 512 chip. What's going on?

Extra info
What's on the sticker of the new chips: CT25664AC800.M16FH, 2GB 200 - PIN DDR2 SODIMM PC2 - 64, BL111CY.6D

What's on the sticker of the memory's box: 4BG KIT, 2 - 2GB 200 - PIN DDR2 SODIMM, UNBUFF PC2 - 6400 CL6, CT2CP25664AC800

A couple of possibilities. One of the new chips might be defective, causing the system to not boot up. Will your system take the 2 GB modules? Some of the older Macbooks have a 2GB max therefore the 4GB kit would not work. You can check the maximum memory here:

http://www.theupgradeplace.com/iram.php?mc=MacBook

The Upgrade Place

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