remotely shutdown computer by administrator

[lazystorm]

Hi,
I am an administrator of a lab(having 100 PCs and running windows 8.1 pro and connected to my server via LAN) and I have administrator access while users have their on usernames and passwords. I want a method to shutdown all (at once or one by one) computers in the lab.
Please Help
Thanks

 

[samuria]

Welcome to the forum.
To restart or shut down a remote computer and document the reason using the Windows interface

• Click Start, click All Programs, click Accessories, and click Command Prompt.
  
• Type shutdown /i to display the Remote Shutdown dialog box (Shutdown.exe).
  
• Under Computers, click Add to enter computer names, or click Browse to open the Find Computers dialog box.
  
• Under What do you want these computers to do, click Restart or Shut down.
  
• Select the appropriate reason for the restart or shutdown from the list.