If you are entering
http://www.google.com/ and you are going to the
http://www.google.com/news page there could be an entry in the hosts
file that is instructing the browser to go to the news page instead
of the main search engine page.
To find out, enter hosts in the Search -> All files and folders and
enter hosts (nothing else) in the search box with your C: drive
selected.
Choose to open the hosts file with notepad. Have a look for any entry
that can perform the redirection.