i hope someone can help me.
So.. i come back home.. switch on my mac laptop..enter the password.. get into my account.. battery is flat.. laptop switches off.. ok.. charger in, switch back on again, type in password..nothing happens.. it starts loading and then gets me back to the start screen,where im supposed to type in my pw.. yes it is the correct one, as it didnt shake.. and i was in there a few minutes ago.. can anyway tell me what happened and how to solve it?
Thanks in advance

press CTRL + ALT + DEL twise and type user name Administrator with blank password you can get into it.