Chosen Solution
I had bought the 2018 version of Mac Mini in 2020. The last intel chip in mini. I used the iFixit kit to upgrade the RAM from 8 GB to 64 GB and it worked fine for a year. Suddenly after the Mac OS Monterey update the custom RAM just does not work and keeps crashing the mac. It was actually quite difficult to debug that the issue was in the RAM. Now that I have, I can reliably reproduce the issue and am now stuck with the original 8 Gigs of RAM. Is anyone else having this issue ? Has anyone solved this so far ?
Did you try reseating the RAM also did you put the shield back on as some folks didn’t want to put back on.