Launch command prompt (as administrator) and run the below command. User should have administrator permissions on the server.
1: SHUTDOWN /r /f /t 0 /m \\<ServerName> /c "<Description>"
/r Shutdown and restart the computer.
/f Force running applications to close without forewarning users.
/t xxx Set the time-out period before shutdown to xxx seconds.
The valid range is 0-600, with a default of 30.
/m \\computer Specify the target computer.
/c “comment” Comment on the reason for the restart or shutdown.
If there aren’t any issues the system will be restarted
1: C:\Windows\system32>;SHUTDOWN /r /f /t 0 /m \\xyz /c "Hotfix Installation"