open the file config.inc.php in folder C:/wamp/apps/phpmyadmin2.10.1 and find this line:
$cfg['Servers'][$i]['password'] = 'TakeOutAnythingInThisSingleQuote'; // MySQL password (only needed) or type a password of your wish inside that single quotes.
Do as advised, then save the file, shut down and exit wamp. After restart wamp, start all over to setup password.
Above phpmyadmin path may vary based upon your wampserver version.