The following is what has occurred: At the database configuration page, I entered the database information, (select My SQL, database name, username, password, host, port number). Once the information is filled, I select “Save and Continue”. Then, The page loads for a couple minutes; stating “waiting for localhost” at the bottom of the browser. Next, I am leaded to a page stating “Drupal already installed”. So I delete the settings, and create a new database. I refilled the database information at the Database configuration page, and the error occurred again, stating “Drupal already installed”. I redo the process until about the 5th try, Drupal installs displaying the loading bar.

Does anyone know the reason for this happening? Why does it say downloaded already, but then downloads after redoing a couple tries? Can speed be the factor?

Probably the database credentials are not properly given at the time of installation. Remove the previous project and start a fresh installation by our step-by-step instruction.