How To Block Websites Without Any Software

• Open My Computer and go to C:\Windows\System32\drivers\etc
  

• Open hosts file in notepad  (Double Click To Open)
• Select Notepad in Open with Dialog.

• Text in the hosts file look like in below image.

• Below the  127.0.0.1              localhost 
•                   ::1                        localhost

•  Enter websites in below format
•  127.0.0.1        www.SiteName.com

• To block facebook website add the below line to hosts file
•   127.0.0.1      www.facebook.com   

• To block multiple websites Add website one after one in a new line in the below format
• 127.0.0.1     www.SiteName.com
• See the below image.

•  Ctrl+s and save the hosts file. 
• That's it open any browser try to open the website which you blocked. It will show theUnable to connect message.

• This works on all the browsers like Internet explorer, Firefox, Chrome, Opera, Safari,....etc