shutdown /m [\\computername] [/t ] [/c "comment"]
/t = This is the time, in seconds, between the execution of the shutdown command and shut down or restart.
/t = This is the time, in seconds, between the execution of the shutdown command and shut down or restart.
/c "comment" = This shutdown
command option allows you to leave a comment describing the reason for
the shut down or restart. You must include quotes around the comment.
The maximum length of the comment is 512 characters.
example :-
This command type in your cmd
shutdown /m \\MY-PC /30 /c "bye"
