Hey All, I've just installed 16GB of Crucial RAM into my Mac Mini Server which has all of the latest firmware/software updates. I wanted to run Apple Hardware Test just to make sure everything was OK. So I hold down 'D' at the startup chime only my Mac booted into Apple Server Diagnostics (version 3X109r2). So I performed the test and it has been stuck on the Memory Test 12 for almost an hour and I'm slightly concerned. So here are my questions... 1) Has anyone with this model of Mac Mini have 16GB RAM installed? In particular, Crucial RAM? 2) Has anyone with this model of Mac Mini performed ASD before and approximately how long does it take to complete? 3) Is there anyway to run AHT rather than ASD on this model of Mac Mini? Or should I stick with ASD seeing as that is what is installed on it? 4) What should I do if the Memory Test 12 has crashed or will not proceed? I have already tried to click stop test which has no effect whatsoever! 5) Would it be worth it to put the original RAM back in and run the test again? I would really appreciate your help with this guys, Many Thanks.