XP login problem

[FishMurderer]

I'm looking at a PC for a friend who cannot log in for some reason. All 3
user names, plus Administrator - when entered - simply loop back to the
login screen. There's a brief flash of "loading user's preferences" or
whatever, but it's gone too quick to really note.

No passwords are used on any account. I'm *told* that nothing has changed
within the PC since it was built a couple of years ago...

Anyone offer any help on this?

Mark

 

[Guest]

Well if you havent actually managed to log in to the system then it might be
worth trying last known good configuration option

 

[Rock]

I'm looking at a PC for a friend who cannot log in for some reason. All 3
user names, plus Administrator - when entered - simply loop back to the
login screen. There's a brief flash of "loading user's preferences" or
whatever, but it's gone too quick to really note.

No passwords are used on any account. I'm *told* that nothing has changed
within the PC since it was built a couple of years ago...

Was malware recently removed from this system? Something may have altered
the Winlogon userinit entry in
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

Unable to Log On To Windows XP After Removing wsaupdater.exe
http://www.lavasofthelp.com/articles/v6/04/06/0901.html

You cannot log on to Windows XP after you remove Wsaupdater.exe
http://support.microsoft.com/kb/892893/en-us

If that doesn't help see this:
A User Logon Request Is Rejected Without Any Messages
http://support.microsoft.com/?id=313322