Now you can follow these steps:-
1. Close Google Chrome.
2. Simply select the "Start" button and kind "notepad."
3. Right-click "Notepad" from the listings and select "Run as Manager."
4. Click on "Yes" in the verification window, or get into your administrator password if you are not currently signed in to webmaster account.
5. Keep the "Ctrl" key and media "O."
6. Type "C:\Windows\System32\drivers\etc\hosts" without quotes into the Start dialog's "File Name" field and media "Enter" to look at the serves computer file.
7. Add "127.0.0.1 www.facebook.com" to the serves file's written text. This should be placed on a new line at the bottom of the writing.
8. Keep the "Ctrl" key and media "S" to save your changes.
9. Start Search Google Chrome and try to get around to Facebook or myspace. You will notice it is now blocked.