How to Shutdown a Network Computer [LAN]

Shutting down a server or other remote computer is possible from the convenience of your own PC. It's not hard to learn to shutdown a remote Windows computer from your own desktop on a LAN. You'll just have to learn the proper computer command shorthands

Steps 1Open the command prompt. 

This may be done by clicking on the "Start" button, and selecting "Run".

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   Type in cmd and press Enter.
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   Type in shutdown -m \\computername, replacing "computername" with the name of the computer you wish to shutdown or the computer's IP address.
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   Experiment with the shutdown commands switches.
   

   • -r will force a restart, disabling any services or user interaction from interrupting it.
   • -c "comment" will force a comment to appear on the system being shutdown.
   • -t xx will force a timeout for "xx" seconds. For example, -t 60 would perform a shutdown after a 60-second timeout.
   • -a will abort the shutdown.
   • A full command example: shutdown -m \\myserver -r -c "This system will shutdown in 60 seconds" -t 60
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   Try another method:
   

   • Type shutdown -i in the run window.
   • Click the "Add" box and type the name of the computer you want to shutdown or its IP address. You can select what you want the computer to do.
   • In this mode, it's necessary to add a comment. Do so.
   • Press OK.

   
   Source:- wikihow.com