No power off or restart option

The missing Shut down and Restart commands are controlled by Windows Start-menu policies, so check and disable the NoClose policy for your account first.

Restore the power commands

Registry changes can cause Windows problems if made incorrectly; export the key before changing it.

1. Press Windows key + R, type regedit, and press Enter.
2. Go to:

      HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
   

3. Select File > Export, choose a location and filename, and save the backup. Microsoft documents these registry backup steps here ^1^.
4. In the right pane, find NoClose:
   • If it exists and its value is 1, double-click it and set Value data to 0.
   • Alternatively, right-click NoClose and delete it.
   • If it does not exist, do not create it.
5. Close Registry Editor.
6. Press Windows key + R and run:

      shutdown /r /t 0
   

7. After Windows restarts, open Start > Power and check for Shut down and Restart.

The NoClose policy removes Shut down, Restart, Sleep, and Hibernate from the Start menu and security screen when enabled; disabling or not configuring it restores those commands ^2^. This registry change also resolved a closely matching Windows 11 case ^3^.

If this is a work- or school-managed PC

Do not override the registry policy. Contact the organization’s administrator and ask them to review:

• User Configuration > Administrative Templates > Start Menu and Taskbar
• Computer Configuration > Administrative Templates > Start Menu and Taskbar
• Remove and prevent access to the Shut Down, Restart, Sleep, and Hibernate commands

Windows also supports device-management policies that hide individual power options or the entire Power button ^4^.

If NoClose is absent or already 0

Check this second policy location in Registry Editor:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

If HidePowerOptions exists and equals 1, that is another documented policy capable of removing the power commands. On a personally owned, unmanaged PC, back up the key and set it to 0, then restart. On a managed PC, have the administrator change the policy instead ^2^.

If neither policy is configured, repair Windows system files from Terminal (Admin) or Command Prompt (Admin):

DISM.exe /Online /Cleanup-Image /RestoreHealth
sfc /scannow
shutdown /r /t 0

DISM repairs the Windows component store, while SFC scans and repairs protected system files ^5^.

References

1. Windows 11
2. Policy CSP - ADMX_StartMenu
3. How to fix the shutdown option in start menu, it does not show in in the options ? - Microsoft Q&A
4. Start menu policy settings (windows-11)
5. Fix Windows Update corruptions and installation failures