I was in process of rebuilding an 8.1 PC. The last batch of updates caused it to shut down within seconds of starting. I did manage to do a SHIFT + RESTART power button and get into the diagnostic program. I tried to revert back to a system restore point but that failed with an unexpected error.
The next time I got in it ran for a couple minutes before shutting down. In that time, it tried to do an update for: Intel - other hardware - Intel Dynamic Platform and Thermal framework Driver. Now it is shutting down within seconds of boot.
I can't really say that the last update is related. Not sure where to go from here. I REALLLLLY don't want to start over! It ran perfect up to the last group of updates.
UPDATE: I did the SHIFT + RESTART option in the power menu and once again tried to go back to a system restore point. Once again if failed. Once again it reboots and has not shut down unexpectantly. I checked to see if there are any remaining updates. The one I mentioned above (Intel - other hardware - Intel Dynamic Platform and Thermal framework Driver) is still listed as a pending update.
At this point I suspect the driver update for: Intel - other hardware - Intel Dynamic Platform and Thermal framework Driver