Hi Cissy95501,
Welcome to Microsoft Answers community.
Since when are you facing this issue?
You may try the below steps.
1. Click on start button.
- Type gpedit.msc and press enter.
- Go to User Configuration\Administrative Templates\Start Menu and Taskbar4. Make sure that the option "Remove and prevent access to the Shut Down, Sleep and hibernate Commands" is either set to Not Configured or Disabled.
- Close Group Policy editor window.
Hope this information is helpful.
Let me know if this worked.
Thanks and Regards:
Umesh P - Microsoft Support