MajorGeeks published a quick guide about changing the default Alt+F4 shut down in Windows 10.
How to Change the Default Alt+F4 Shut Down in Windows 10
When you press the Alt+F4 keys, Windows 10 will, by default, show Shut Down when you press OK. If you use Alt+F4, you can save some time by changing the default Shut Down to Restart, Sleep, Sign out, or Switch user.
How to Change the Default Alt+F4 Shut Down in Windows 10 - MajorGeeks
