Shutdown a computer by cmd

Steps

1.  Press window key+R

2.  Type cmd and press Enter.

Helpful? Do a Remote Shutdown for a PC on a LAN Step 3"

3. Type in shutdown -m \\computername, replacing "computername" with the name of the computer you wish to shutdown or the computer's IP address.  

4.   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