I upgraded my ram as was specified online, 1066Hz, it worked. But then, if my computer reads 16 gigs of ram, when I close my lid, it won't wake up anymore. I force shutdown with the power button, reboot, and then the right memory slot, on about this mac, shows up empty, so I have 8 gigs of ram and it works fine. A few reboots later, or who knows when, the the second slot of ram is back online, and the next time I close my lid, it won't wake up again and I have to go through that process again.

Initially, I thought maybe one of the ram cards was bad, so I swapped them. The same thing happened. The right slot on about this mac went empty after I closed the lid and it wouldn't wake up.

Any ideas why this might be happening or if it is at all repairable? I haven't seen other people experience this issue.


  • Start with resetting the NVRAM (Cmd-Opt-P-R) and an SMC Reset. If that doesn’t fix it, it may be your logic board. Confirm this by testing each memory module individually in each slot, one at a time. If the problem persists with both modules in the same slot, it’s your logic board. – Allan Jan 31 at 4:29
  • Thank you! I will try that out. – Danny Israel Feb 1 at 7:15

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