Our recommendation will be to make sure that the thermal material was correctly added to the CPU die and check if the performance of your laptop fan is properly cooling down your unit.
Please have in mind that what Intel considers a critical or dangerous temperature is anything beyond the 100 °C.
Thanks, Freddy. I had already done that, to no avail. The machine was shutting itself down in the mid 80d C range, so the critical temperature determination was out of my control. The repair was beyond me so I sold the unit distressed.
Thanks for the update on this. Please let me know if you need something else.