سلام الله عليكم
كود:
log into phpmyadmin and delete (drop) the tables from any previous phpbb installations. To drop the tables, after logging into phpmyadmin click on your database name in the left frame (this frame will take several minutes to load.) A list of tables will then appear in the main frame. Check all of the tables that begin with phpbb_ and then choose the "Drop" option in the pull down menu that says "With Selected:".