BuddyPress.org

Dear kind people, i have installed buddypress which has been working for some few months now. Just yesterday, I decided to give the site a title as elpeeps from the general settings and that caused the whole problem after. the only page that shows now is the registeration and login page but when i enter any login it ramains the same.
my site address is http://www.advghana.com/wp that is the site url but when i try to go any other page it result to
Not Found
The requested URL /elpeeps/index.php was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Please i need your help. Thanks