There is also a shutdown command that can be executed within a command shell window.

com /en-us /windows-server /administration /windows-commands /shutdown In Windows, a program can shut down the system by calling the ExitWindowsEx or NtShutdownSystem function. The Windows Shutdown website lists various software utilities to automate the task of shutting down. Nowadays there are many software utilities which can automate the task of shutting down a Windows computer, enabling automatic computer control. On a home PC, every user may have the shutdown option, but in computers on large networks (such as Active Directory), an administrator can revoke the access rights of selected users to shut down a Windows computer. Just like other operating systems, Windows has the option to prohibit selected users from shutting down a computer.

Options include shutting down the system and powering off, automatically restarting the system after shutting down, or putting the system into stand-by mode. In Microsoft Windows and ReactOS, a PC or server is shut down by selecting the Shutdown item from the Start menu on the desktop. The above is from Windows 7 (this has now moved to the same window in Windows 10). Shutdown options have been moved from a separate dialog box to the start menu, in Windows Vista and later versions of Microsoft Windows.

Windows 7 shutdown screen