cant log int using @live.com.au

hello there,

back in 2009 i created an account *** Email address is removed for privacy ***, i used it to create accounts on social networks back then and havent used in the past 2 or 3 years. now i'm having problems logging in youtube, and so i tried to restore my password via email. when i tried to log into *** Email address is removed for privacy *** it now says this account doesn't exist. what should i do?

thanks in advance

Tiê