MySQL登陆不上！！！

安装linux系统，登录PHPMyadmin页面，输入用户名和口令后提示：


Warning: Access denied for user: 'root@localhost' (Using password: NO) in /export/home/phpMyAdmin/lib.inc.php3 on line 255

Warning: MySQL Connection Failed: Access denied for user: 'root@localhost' (Using password: NO) in /export/home/phpMyAdmin/lib.inc.php3 on line 255

错误
MySQL 返回：Access denied for user: 'root@localhost' (Using password: NO)
返回


有高手能帮忙解决吗？

没人回复哦
自己顶一个~

你的用户名和密码正确吗？
要输入密码登陆

Access denied for user: 'root@localhost'