Installing bbPress after deactivating Buddypress (forums) - not working!

I had Buddypress installed and activated on my site, but determined that I didn't really need it. I do want to have a "forums" area (using the EduClean/EduKnows themes) so I am trying to now install bbPress according to the instructions in your support manual. When I open the page in my browser for "forums" (the public_html folder where my bbPress files were loaded), it returns a "Page not found!" and does not let me continue with the installation (setting up the database, etc.). Can someone here please help me??

Thank you in advance!!
Amy