Can't log in to my wordpress.org account

Hi everyone )
I’m a newbie in wordpress. Didn’t change my blog URL properly, then fixed it through PhpMyAdmin history and had my blog on its place again. But it has automatically logged me out. Trying to log in again, entering the correct username and password, the browser redirected me to
‘Not Found
The requested URL /localhost/wp-admin/ was not found on this server.’
I’ve claimed to forget the password and have it on my e-mail, received the link to changing the password to my account. But when it comes to entering the new one, it says all the same.
Hope somebody could help me 🙂
Thank you