ademta

The problem that says "Error establishing a database connection" means that you have not configured database setting for your install in wp-config.php and sample for the same is provided with wp-config-sample.php. You have to change the name of wp-config-sample.php to wp-config.php and fill in the database details like username, password, host (localhost/whatever), database name. Consider creating the database with phpmyadmin from the control panel. After configuring wp-config.php you can start the install.