Changed Admin account password through Control Panel/User Accounts. Using characters "&" and "*" amongst numbers and letters.
 Windows accepted the new Admin password!!! No errors reported.
 When laptop was rebooted, entered the new password to the Admin account that Windows accepted in the change: new password, which was previously accepted by Windows is now not accepted. How can a password that was accepted now be unaccepted?
 I cannot log into my Admin account.