Error connecting to DB

WordPress will not connect to my database yet everything looks good (DB name, admin logon and pwd are same in wp-config as in the DB).
I wrote a TestConnect.php script as follows:

<?php
$link = mysql_connect('localhost', 'mpeneucd_wp476', '2S.PKbb60.');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully';
mysql_close($link);
?>

When I run it from http:\\localhost\TestConnect.php I have no problem connecting to database. However when I run it from http:\\localhost\wordpressTestConnect.php I get the error

Error establishing a database connection