Ok log in to single user mode by holding s and command at startup until you see text once you get to the root# sign type the following commands
mount -uw /
then type this
rm -r /Users/username/Library/Preferences/com.apple.loginwindow.plist
if running lion remove from same location lockfile also
rm -r /Users/username/Library/Preferences/com.apple.loginwindow.plist.lockfile
I would also remove these
rm -r /Users/username/Library/Preferences/com.apple.loginitems.plist
rm -r /Users/username/Library/Preferences/com.apple.loginitems.plist.lockfile
I went into single user mode but it would not allow me to type. I saw the root# mount - uw but again it would not let me type.
and Im not using lion if that changes anything. Im using snow leopard.
and our friend seems to think my user has a corrupted file on my user screen which is why we cant log in. Does that help?
Oh I see.. actually I could type i just didnt realize it my bad.
Okay I typed right after it says : /root#
and It came back saying:
mount: unknown special file or file system /rm-r.... 'what i typed before'
soo what does that mean?
Did you type mount -uw /
that must be typed first
Wth a space after t and w
Oh and there are no / in com.apple.loginwindow.plist
So after you mount it is
rm space -r space /Users/username/Library/Preferences/com.apple.loginwindow.plist
And the command is same for all four files just com.apple files are different