Block Website by editing your host file.
In your windows pc there is a host file. Editing that host file you can block a website. host file is located at "C:\Windows\System32\Drivers\etc"
First of all you have to disable all your antivirus programs.Because Antivirus will not give you the permission to edit the host file.
Step 1: Open notepad as Administrator(right click on note pad then run as
administrator)
Step 2: Using Notepad open the host file (C:\Windows\System32\Driver\etc)
Step3: By default your locale host is 127.0.0.1 you have to add one line at the
end of the file. 127.0.0.1 <space> your site
eg. 127.0.0.1 facebook.com
127.0.0.1 youtube.com
step4: Save the file. and the specified site will be blocked.
when you try to connect to your specified site in browser it will redirect it to
the 127.0.0.1 . :)