some problem on my XP comp. Home edition

From: chikkh (anonymous_at_discussions.microsoft.com)
Date: 07/31/04 

Date: Sat, 31 Jul 2004 00:00:24 -0700

when I boot my computer at I go to the log in.
I havnt set into login mode.
After I press the login button, it log out itself in a
few second. can anyone help me???

 thank you very much