RE: "Log in and then try it."
Not sure i understand. Log into what?
I'm on my daughter's computer, and google is the homepage. I get a blank page when i get online...until i type in any address, other than www.google.com . When I type www.google.com in the address bar...it just won't go there. Seems odd.
It was a play on the old "are you logged in?" joke. Seriously though, sounds like you have a partial page, possibly header only, cached in your browser. You can try emptying the cache, or alternatively restarting the computer to produce a new session.