My son had a laptop that we sold to someone else. In order to access the computer, he needed my son's email address and password to Microsoft. The new owner went in and changed the email address for the administrator for the computer to his email address. Now Microsoft says my son's email and account does not exist. So I tried to create another account with his same email address and it says there is already one with that email address. The new owner of the computer said they changed their info back to my son's account info, but Microsoft still says account and email do not exist. HELP!!