Are you seeing the login screen but when you attempt to do so, it simply cycles back to that screen?
Or are you seeing nothing but a blank screen at startup?
It could be related to missing "winlogon.exe" or "userinit.exe" files or to the damaged registry keys. The easiest way to fix the issue is to run a "repair" install using the Windows XP disc.. Such an install will replace any missing files and repair the registry.. But if you'd like to tinker around, you can start the computer using the Recovery Console, then check the system for the two files I've mentioned above, (They reside in the C:\Windows\System32 folder), then replace them if necessary. Either way, you'll need a Windows XP installation disc.. Do you have such?
How to install and use the Recovery Console in Windows XP
Hope this helps.
I was getting rid of a virus. I was almost done. A popup kept appearing that it could not open a virus program at login. The virus programs have been removed. I found the link in the registry in WINLOGIN
UNFORTUNATELY, I deleted too much under WINLOGON and now I can't log in.
I did export the key but it does me no good unless I can log in.
Can someone help me get logged in???????????