Why I can not login to many web pages...???

After installing new window and connect the internet by cable to my computer
I could log in only to some web page, but the other webpag like *go.microsoft.com
then when I click diagnose problem it appear that // website(go.microsoft.com) is online but isn't responding to connection attempts.//
Detail information is//The remote computer isn’t responding to connections on port 80, possibly due to firewall or security policy settings, or because it might be temporarily unavailable. Windows couldn’t find any problems with the firewall on your computer.