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13.HOW TO BLOCK AND 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)