1.open your xampp dir ( c:/xampp )
2.to phpMyadmin dir [C:\xampp\phpMyAdmin]
3.open [ config.inc.php ] file with any text editor
$cfg['Servers'][$i]['auth_type'] = 'config'; //replace 'config' to ‘cookie’
$cfg['Servers'][$i]['AllowNoPassword'] = true; //change ‘true’ to ‘false’.
last : save the file .
here is a video link in case you want to see it in Action [ click Here ]