Shut down verb – Cease to operate or cause to cease operating. Turn off is a synonym for shut down in disable topic. In some cases you can use "Turn off" instead a verb "Shut down". popular alternative
Turn off verb – To cause to feel disgust. Shut down is a synonym for turn off in disable topic. You can use "Shut down" instead a verb "Turn off", if it concerns topics such as stop from operating. popular alternative
Windows 95, upon being shut down, would "end" on a blank screen except for the message "It is now safe to turn off your computer." Newer versions of Windows also would do the same, if run on PCs that cannot just turn themselves off instead of waiting for the user.