The notification center ... of Windows 10. The Action Center provides a fast way of accessing notes and settings and turning functions on and off. It is also the way to switch between Tablet ...
Windows makes it easier for you to add, remove, or arrange the Quick Action buttons in the Notifications & Actions Center ... Brightness, Note, Tablet Mode, Wi-Fi, or Quiet Hours.
The startup mode in a newly installed Windows 10 is the Desktop mode ... Desktop mode is selected by deselecting Tablet mode in the Action Center. See Win10 Tablet mode and Windows Action Center.
4] is the Table Mode ... in your Windows OS version – performs weekly maintenance of the operating system. It either fixes problems automatically or reports problems through Action Center.