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4GB of RAM have just disappeared from my Mac Pro (3,1 version)

3840 Views 12 Replies Latest reply: Apr 22, 2013 5:09 AM by The hatter RSS
rosuna Level 1 Level 1 (0 points)
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Feb 18, 2013 7:25 AM

Dear Friends:

 

I have a Mac Pro 3,1 with 16GB of RAM in 4 modules of 4GB each.

 

Two of them are plare placed at the top tray and the other two at the bottom tray.

 

But now the system information only recognizes 12 GB of RAM in 4 modules (4 + 4 and 2 + 2).

 

I have checked the RAM modules, and I have interchanged the trays. Nothing happens.

 

ram.jpg

 

The placement of the RAM modules is correct, following the official guide:
screenshot_1.png

 

Thank you very much for your help.

 

Rubén Osuna

Mac Pro, OS X Mountain Lion (10.8.2), Mac Pro 3,1

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