Windows XP Startup

My first problem occurs when when i start up my laptop
windows xp, it shows the blue family logon screen with
the small windows logo and it says that windows is
starting up and it stays like that for a long time.
please help me. i am really stuck. My computer started to
do this after I removed novell from the control panel-
networking-properties-select novell-uninstall. My 2nd
problem is every time that i turn on my computer i get a
window that says "failed to log on as system
administrator, please make sure that the password and
domain are correct. How do i fix it so i dont get this
prompt.