Hay to every one!!!

i m working with WAMP, when we run it first time, phpmyadmin starts with NO PASSWORD, what i had done in my previouse practise? i just made changes in congfig.inc.php for the following variables to set the password:

$cfg['Servers'][$i]['password'] = 'abc123';// it waz empty, i set its value.

$cfg['SQLValidator']['username'] = 'root'; // it waz empty, i set its value

$cfg['SQLValidator']['password'] = abc123; // it waz empty, i set its value

these changes were working sucessfully, but now after making these changes i get following error:
#1045 - Access denied for user 'root'@'localhost' (using password: YES)

kindly some one do the favor and guide me that how can i set password, i ve also set password by phpmyadmin interface by applying MD5 function, but it also had no effect. i had also change these varible's values in phpmyadmin\...\libraries\config.defult.php, i had change the value of $cfg['Servers'][$i]['nopassword'] = FALSE; but

so kindly tell me the solution except these ones.

Best Regards,

Sadia Tabasum