10. Power button already assigned for shut down. 11. Haven't replaced power button on PC. Lifewire. 1. Shift + Shutdown didn't make a difference in the shut down process. 2. Tried command line - no impact. 3. Tried troubleshooter - see above. 4. Unfortunately have had to do hard shutdowns to get pc to turn off. Minitool. 1. More @Wikipedia
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