We have a Dell Vostro 1000 laptop with Windows 7 Pro installed. The original user had only one account enabled, his own with admin rights. We added two more users with passwords without any errors reported. However, when either of them try to logon, they receive the message "The username or password is incorrect." We can logon using the first username and password and reset the passwords of the new users, but to no avail. We have not tried creating new users who don't have passwords. All three user icons show on the logon screen.