Hello, I have a Mac Mini late 2012. Years ago I upgraded the memory from 4 to 16GB and it worked fine. Last year I started to get the memory errors (shutdown with 3 beeps). I replaced the old 4 GB memory dimms and everything was fine. I claimed the 16GB dimms for warranty and received new 16GB dimms and it seemed ok again. Until a couple of weeks ago the memory errors came back, always at the moment that Mac mini feels very hot. This week I upgraded the High Sierra and the problems get more intens, even when changing to the old 4GB dimms. Does anyone have clue what is going on? I also had problem with the 1TB harddrive, it didn't wanted to boot. With the help of disk utility I managed to repair the disk and the startup was ok again. Is there a possibility that this related? If so, would it help to replace the harddrive with a Flashmodule?