Working with an Early 2011 MacBook Pro on High Sierra. 16GB of RAM. Just replaced the stock hard drive with an SSD.
I’ve been chasing down the random shut down bug for the last few days and ran the AHT tonight. It came back with a Memory Module Error below, but the system is still recognizing the full amount of RAM in About My Mac. Should I open it up and reseat the RAM? Replace it?
4MEM/60/40000000: 0x8303f798
MacBook Pro 13", macOS 10.13
Is this the original RAM or has the laptop been upgraded with third party RAM? Macs are very picky about the memory used.
You can double check both RAM modules are securely latched. Re-seating the memory is also a good idea. Just make sure the upper memory module nearest the Keyboard is fully latched in place after installing the second module nearest the Bottom Case. Sometimes when installing the second module it will cause the first module to become unlatched. You can use a non-metallic item such as a toothpick to press on the edge of the memory module nearest the Keyboard (just don't damage the very small components on the memory module).
On many of these MBPros the lower memory slot nearest the Bottom Case can become damaged over time so there is a very good chance this slot is bad. Try removing the memory from the slot nearest the Bottom Case to see if it solves your problem.
It is also possible one of the memory modules is bad. You should use the upper memory slot nearest the Keyboard to test each one individually.
Make sure to disconnect the power adapter and the battery before removing or installing the memory. Be very careful not to damage the small triangular protrusions on the sides of each memory latch.
Is this the original RAM or has the laptop been upgraded with third party RAM? Macs are very picky about the memory used.
You can double check both RAM modules are securely latched. Re-seating the memory is also a good idea. Just make sure the upper memory module nearest the Keyboard is fully latched in place after installing the second module nearest the Bottom Case. Sometimes when installing the second module it will cause the first module to become unlatched. You can use a non-metallic item such as a toothpick to press on the edge of the memory module nearest the Keyboard (just don't damage the very small components on the memory module).
On many of these MBPros the lower memory slot nearest the Bottom Case can become damaged over time so there is a very good chance this slot is bad. Try removing the memory from the slot nearest the Bottom Case to see if it solves your problem.
It is also possible one of the memory modules is bad. You should use the upper memory slot nearest the Keyboard to test each one individually.
Make sure to disconnect the power adapter and the battery before removing or installing the memory. Be very careful not to damage the small triangular protrusions on the sides of each memory latch.
This is all great info, thank you!
I’m not sure if the RAM is original or not, as I purchased this from a friend a few years ago. But there haven’t been any issues regarding it until recently.
I’ll try the suggestions you mentioned above and let you know how it goes!
Memory Module Error on AHT
