Block internet on one computer on the network

i wanna block internet on other computer how can i do

reply me how

Depends on the router and network setup.
The easiest way would be something like setting the router to block internet access for said computer. But again its impossible tot tell you how without more information.

disconnect it from the network?

Find the black box labled the internet you should find this in the roof space, take it down stairs and insert in the bin!

Go to the computer you want to block and in elevated command prompt type in:

ipconfig /all

find out the MAC address of the machine

Logon to the router config page.

If you know the username and password, put it in. If you don't know or haven't set one up, search on google for default username and password. If you forgot the password, press the tiny reset button to reset and use default password.

In the LAN or wifi config page (depends on whether you want to block a LAN or wifi connection), go to the MAC address filter and block the MAC address.

You can do this simply by setting the proxy server in internet explorer settings to 127.0.0.1 the loopback interface, this will not stop the machine having network connectivity but it will stop the users on that machine from browsing the internet.

+1 to Das that was going to be my recomendation as well.

+1 to stig too, I have no idea what it means, but I was going to say that too.

Well if you set the IE Proxy to 127.0.0.1 then firefox and other browsers will work. Set the computers DNS settings to 127.0.0.1 and you block all browsers and email programs. Unless the user knows the IP address of the site the wish to visit they won't get anywhere outside the local network.

Ssteven

Or just give it a static IP address outside of the network range to kill all network connection altogether.

If the computer requires network access to the other machines on your network you could give it a valid static IP address, but don't define the default
gateway, or set it to its own IP address.