Problem logging into windows XP (no password-safemode, blue screen persist)

1)
Try to log into the safe mode and do what was explained/advised in :
http://answers.yahoo.com/question/index?qid=20070409184255AAuAqLp

However, there is no open box for me to type in the passwords in the windows xp blue welcome screen in safe mode.

So i tried ctrl-alt-del and then a dialog box appears with username and password.
Username : administrator
password : control userpasswords2

But the above password doe snot work.
 
 2)
Tried administrator / (password leave blank) , administrator/administrator, etc all kinds of generic combination, but still doesn't log on.

It still goes back to safe mode with 2 avastar showing - 1 for administrator and 1 for user, without any open white box to type in your password. and when clicked on the administrator avastar, it shows "loading personal settings" ...."saving your settings" and then back to original position. --- (a)

And then, if clicked on the user avastar, it will show "logging off....loading personal settings...saving your settings.." and then back to the original position. ---(b)

Previously, prior to logging into safe mode,  scenario (b) happens.
so I tried to copy userinit.exe file from another PC, rename the file to wsaudaptor.exe and then copy this file into the systems32 folder. however, it doesn't solve the problem either.

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