crwdns2934241:0crwdne2934241:0 John Laurindo

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Had the same problem with a 2012 13" MacBook Pro. Bottom slot has a bad connection to the logic board. With both RAM slots, in use the symptoms are as follows: displays stripes on LCD, freezing, reboots often, 3 beeps, etc. The computer will work fine if only the top memory slot is used. The only other solution is a logic board replacement.

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