By default, Windows 10 does not perform a full shutdown when the normal power menu option is used. The Fast Startup Mode uses the hibernation file to restore a previously saved image of the Windows kernel and all necessary drivers for installed devices.
To modify the default, access Power Options and then select “Choose what the power buttons do.” A shortcut without modifying the default is to hold the Shift key down when selecting the Shut Down menu option.
https://www.howtogeek.com/243901/the-pros-and-cons-of-windows-10s-fast-startup-mode/