Dashboard error

Hello there. I Installed wordpress on my local machine, it is a Apache server. The Bolog works but as soon as I sign in I get a “The page cannot be displayed” error message. But the interesting thing is when I get back using the Back button of the browser I can see that actually I am logged in!! It lets me edit and surf every navigational tabs except “Dashboard” and “import”. My guess is that my dash board does not work and that is why even though I am signed in I am getting the message of “The page cannot be displayed”. Where did I make the mistake when installing the dashboard page and import page? By the way I am using PHP 5.0.4. Any help will be highly appreciated. Thanks.