Yes when stressed the fans go into "Turbo" mode. It runs hot most of the time.

I sent an email to HP service about the problem describing all the trouble shooting steps, swap drives, reset cards and connections, try a different monitor...

Their response is that the mobo is fried and that I should visit a computer store near me to purchase a new MB with the following form:
* mini-ITX form factor
* dimensions: 19 cm (7.5") x 17 cm (6.7")

The machine was unplugged since last night. Tonight It booted.

After about 90mins. Of software updates and futzing around. Core Temp is reporting 64C.

Started an anti-virus scan which is using approx 50% of cpu time. Temp has jumped to 75C.

Playing multiple YouTube videos pushed the cpu to 100% and the temps to a high of 79C