Error establishing a database connection
This either means that the username and password information in your wp-config.php file is incorrect or we can't contact the database server at localhost. This could mean your host's database server is down.
Are you sure you have the correct username and password?
Are you sure that you have typed the correct hostname?
Are you sure that the database server is running?
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I edited wp-config-sample.php to include username 'root' & PW 'root', saved it as wp-config.php. It is currently in C:\xampp\htdocs\wordpress.
Should it be somewhere else, like C:\xampp\htdocs\wordpress\wp-admin, or C:\xampp\htdocs ???
Or should I not have changed the password yet, though you recommend it for better security?
Can anyone help?