Should I be worried about a hardware error if my MacBook Pro is running ok? I have recently had some trouble with my MacBook Pro 8.1 (Early 2011). After running tests, installing the old 2x2 GB RAM sticks and basically trying else everything to restore it, it turned out that the SATA cable didn't want to work with my SSD anymore, although with an older mechanical drive it was ok. So I swapped my SATA cable for a new one, installed my 2x4 GB RAM sticks again and it works again like new. Today however, out of curiousity, I ran the Apple Hardware Test again just to see if anything comes up, and I had this error:



Then I checked again using REMBER!



So which is correct?

Should I do something if there are no symptoms? Am I destroying other parts of my Mac if I just do nothing?
Rember only tested less than 1 GB of your 8 GB of RAM, as explained within the screenshot of the Rember application.


  Memory allocated for testing: 947 MB

Apple Hardware Test will test all of the RAM in the system, since it runs outside of macOS.


As also explained in Rember, to be able to test more RAM with the program:


  run memtest (the core of Rember) in single-user mode