How to block websites without Software

Sometimes we want to restrict access to some particular website from our PC but we dont know how to do it without using some software for it.
Here i am sharing with you a method to do it without using any software.Just Follow these easy steps to do it.

1]Browse C:\WINDOWS\system32\drivers\etc
2] Find the file named "HOSTS"

3] Open it in notepad

4] Under "127.0.0.1 localhost" Add 127.0.0.2 www.sitenameyouwantblocked.com , and that site will no
longer be accessable.

5] Done!

If your are unable to edit the file, Follow this tutorial to take ownership of the folder