How do I know I had to replace memory?
2016-09-07
I was asked how I know I had to replace the memory units?
That is a very good question.
I booted my Mac Mini in DIAGNOSTIC MODE ... Hold "D" while it is booting. Then I run the diagnostics and found the memory check failed. So, I know the memory was bad. What I did not know was whether anything else was bad.
Fortunately, memory was the only bad part.