I changed the root password to test and now I cannot login in phpMyAdmin page in XAMPP. I looked for help here and here which basically says changed config.inc.php>
In xampp\phpMyAdmin\config.inc.php : changing:
'config';$cfg['Servers'][$i]['user'] = 'root'
to
'config';$cfg['Servers'][$i]['user'] = 'user'
and
$cfg['Servers'][$i]['controluser'] = 'root'
$cfg['Servers'][$i]['controluser'] = 'user'
Solved my Problem.