EasyPHP access denied error

[Xinthus]

I was trying to change some password because in default there was No password.
Well I changed it and I got this error.

MySQL said:
#1045 - Access denied for user 'root'@'localhost' (using password: NO)

Above it it told me to check something in config.inc.php, but I have no idea what to do.
Im afraid I messed up something

[MentaL]