Right before it started extensing out I checked CPU temp and fan speed and they were inside tolerance. Even removed the fan & block and totally cleaned out all the dust. Also reapplied thermal paste. But no cigar.

This time I think I will remove the fan & block and then rearrange the CPU. One post that I interpret said the user removed the CPU; reset it and that empty up the problem. I will possibly also try another CPU fan and observe if that works.