Hi, i have a macbook and i cant log into my administrator account, when the accounts menus shows, i click the administrator account and type my password, the wallpaper appears like if its gonna log, but then the blue screen appears again followed by the accounts menu. I have one more account and i dont have any trouble logging in. I really need help because all of my files are in the administrator account, is there a problem with the HD? to add one more difficulty i dont have a backup, so any advice on how to recover most of my files will be welcome.

Thanks in advance.