i have an xp sp3 at home
i only have 1 account (admin)

i was using firefox and ym... when suddenly it went into bluescreen
not just the 1page bluescreen but it was a long bluescreen it scrooled down for about 2secs and then went black

i restarded my pc, i dnt have a password for my account and i dont go to the logIn screen of xp
but now it asks for a password, since i dont have a password i just pressed enter and this is the message that i got

Logon Message : The Local Policy of this system does not permit you to logon interactively.

need help pls... how do fix this without having to reformat my system?