Windows – Is it possible to shutdown a remote computer running Windows 7 via Telnet

One thing to keep in mind is that, the computers you want to shutdown must be on the same network as the "controlling" computer.

There are many solutions to this, I simply chose this one.
This is a simple network access issue. You will have access to certain computer some times, but that is not this case. To gain access of another computer for you to remote shutdown, you must execute the follow command in command prompt:

net use \\Server\IPC$ pswd /USER:user

Replace Server with the computer ip/name you want to shutdown remotely, pswd with the password to any administrator account of the remote computer and user with the Administrator user account name. To list all the computers in your current Wi-Fi network, do net stat. It'll give you the names of the computers. Unless you prefer an easier way: Click Start, then Right-Click Computer. Click properties, it should be named in there. IPC$ is supposed to be there. Sometimes it will not work. I do not know why.

Work cited here.

For example, we'll have a computer named CHOCOLATE, and an Administrator account on the current machine is Bob and the password is Joe:

net use \\CHOCOLATE\IPC$ Joe /USER:Bob

It appears that on Win7 64 bit, telnet.exe is a 64 bit command. You can run it from 64 bit shell (or cmd prompt), but a 32 bit shell will attempt to load it from SysWOW64, and it won't be found there.

I suspect that you are running a 32 bit command prompt (for example, from SysWOW64). If you run 64 bit command prompt, telnet should work.

You can test this by going to Start Menu > Run, type cmd and then run telnet from this command prompt.

How are you starting your command prompt? If it's a link, take a look at the properties. If it's from another program, and that program is 32 bits, then that could be the issue.