Hello....just would like to introduce myself, and I also need your help.
I've had my macbook for a few months now, and last night I had a software update. I did the software update, and took off for the night hanging out with some friends. Anyhow.....this morning it keeps taking me to the Mac OS X Setup assistant. As if I just bought the mac, and started over??? When I go through the steps.....it keeps taking back to the start up screen to enter my information again.....What happened? And what can I do? I hope I posted in the correction section.

Thanks in advance.