Eliminating and prohibiting shutdown

If we wish that the computer can not shut down or remove shutdown from the Start, the way is as follows:
Open the run from the start / press windows + R and type gpedit.msc and press enter.Then the Group Policy window will appear.(fig.1)

(fig.1)

Go to User Configuration / Administrative Templates / Start Menu and Taskbar. Press 2x Remove and Prevent Access to the Shut Down command.
Then will appear the windows 'Remove and Prevent Access to the Shut Down command'> Enabled. Click Apply> Ok.(fig.2)

(fig.2)

To restore the shut down follow the previous steps and select Not Configured. Click Apply> Ok.