When I try to access my blog all I get is a page that looks like an official WordPress page with the latter part of the url: blahblah.com /wp-admin/install.php
I took a screen print but I can't display it here so the page says:
Welcome to the famous five minute WordPress installation process! You may want to browse the ReadMe documentation at your leisure. Otherwise, just fill in the information below and you'll be on your way to using the most extendable and powerful personal publishing platform in the world.