Not having set up an alternate email is an issue, of course.
If you cannot reset the password through the usual means, see this page for information on how to get help with it:
https://windowslivehelp.com/solution.aspx?solutionid=bf5d34bf-db28-44ca-ac9a-93838d81b2d6
There is a form to use that Support will act on, but it can take more than a day for them to deal with it. Be sure to enter both the account you cannot access and another account where they can reach you. Once you regain access to the account be sure to set
an alternate email address and secret questions and answers for account security at
http://account.live.com
~ Microsoft MVP Windows Live ~ Windows Live OneCare| Live Mesh|MS Security Essentials Forums Moderator ~