Windows 7 problem with creating new User account

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http://forums.anandtech.com – I have a HTPC running Windows 7 Home Premium x64. From a Administrator account I created a new Standard account with a password. But when I tried to login to the new account I got the following error message: "This User Profile failed the logon. User Profile cannot be loaded". Following Microsoft's recommendation (http://support.microsoft.com/kb/947215) I tried deleting the User account and creating a new one but the same problem occured. I also tried creating a new Standard user account without a password and again got the same error message. I am unfamiliar with editing the Registr (Hardware)