If you changed all the info, then you simple can do receive lost password, u get e-mail and you use the code, you answer the secret question and you have new password . If you do that and you don't get an e-mail in your inbox then your account is hacked, what I mean is someone logged in on your account, changed the email,pass etc...and he is using it now . What you can do, make a new account, and go friends, add the usernames and see or the person comes online, if he/she comes online talk with em and tell him it your account etc..try to get the account back . I don't know or you used auto login, but never do tat, simple reason, if you do that there is a file on your PC ( You can't see it , open it ) that has the password saved there, and if someone send you a file, or you go on site with that virus/spy ware then he can get your password and username . More u can't do, only if you have the CD KEYS, then you can request via Steam to get your account back . I hope i helped ya a bit .