And contrary to "expert" advice ...
It was fashionable to pretend 25 years ago that Windows was a "real OS" that, like mainframes of the day, needed to be properly shut down if seriously bad things were not to happen to users PCs. However, many users didn't get the message and continued to turn the thing off with the power button. And even those who didn't had to contend with folks elsewhere in the building doing stuff that tripped their circuit breakers and with power failures caused by lightning or drunken drivers smacking utility poles or other slings and arrows of outrageous fortune. So Windows remained pretty much impervious to unscheduled power off. Unix handles it pretty well also BTW.