This error is now occurring after enabling Hyper-V in the Win10 OS Features. All of the automatic patching and configuration that takes place after enabling Hyper-V seems to have processed normally with several reboots noted. There are NO virtual environments defined as yet, nothing has been configured, and the Hyper-V management screen displays normally when started.. The error only occurs during system shutdown and the screen that displays waiting process closure seems to flash by quickly. Any method of initiating a power shutdown will cause the crash and it will occur even if no user has logged into the machine. The machine automatically reboots after the crash so I currently need to manually power down the machine during the bios screen. The machine has never been in sleep mode and automatic sleep is disabled. Hybernation is disabled on the machine too. BUT THIS IS BAZAAR... If I reboot, the machine does NOT crash. If something requests the machine to reboot (eg: for a software change), everything processes normally.