It says this for IE:
Internet Explorer cannot display the webpage
Most likely causes:
You are not connected to the internet.
The website is encountering problems.
There might be a typing error in the address.
What you can try:
Diagnose Connection Problems
More Information.
Firefox:
Unable to connect
Firefox can't establish a connection to the server at
www.google.com
The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer's network connection.
If your computer or network is protected,,,,,etc
I think a program is blocking it because it will connect in safe mode with networking.