HOW TO BLOCK UNBLOCK WEBSITES???

• Go to Start and then Run. 
• Type in this C:\WINDOWS\system32\drivers\etc.
• Now you will see file name Host open that in Notepad. 
• Below "127.0.0.1 localhost" add IP address of site to be blocked. 
• To unblock any site just reversed the process.

EXAMPLE
127.0.0.1 localhost

69.171.224.14 (This will block Facebook)


NOTE: For each site you block just add "1" to the IP (127.0.0.1)