I can't access facebook on Google Chrome.
There may be an entry in your Windows hosts file which is blocking it.
Give this a try:
Close Google Chrome.
Click the "Start" button and type "notepad."
Right-click "Notepad" from the search results and select "Run as Administrator."
Click "Yes" in the confirmation window, or enter your administrator password if you are not currently logged in to an administrator account.
Hold the "Ctrl" key and press "O."
Type "C:\Windows\System32\drivers\etc\hosts" without quotes into the Open dialog's "File Name" field and press "Enter" to open the hosts file.
If "127.0.0.1 www.facebook.com" is present, delete it.
Hold the "Ctrl" key and press "S" to save your changes.
Open Google Chrome and try to navigate to Facebook.com.