Cannot Login into Desktop in Windows XP

I have encountered a very weird problem in my mom's notebook. Her notebook has two account. However, when I clicked on the administrator account at the login screen, I couldn't go to the desktop as usual; instead, I was redirected to the login screen.

I believed that this is a problem of virus. A Google search revealed a lot of hints, but only one solution worked for me. Basically what happened was the registries were corrupted and you have to be able fix those registries without login into Windows XP> This was what I did to get the computer working again .

1. Log into the Recovery Console
2. Type the following:
   
   
   
   

   md tmp
   copy c:\windows\system32\config\system c:\windows\tmp\system.bak
   copy c:\windows\system32\config\software c:\windows\tmp\software.bak
   copy c:\windows\system32\config\sam c:\windows\tmp\sam.bak
   copy c:\windows\system32\config\security c:\windows\tmp\security.bak
   copy c:\windows\system32\config\default c:\windows\tmp\default.bak
   
   delete c:\windows\system32\config\system
   delete c:\windows\system32\config\software
   delete c:\windows\system32\config\sam
   delete c:\windows\system32\config\security
   delete c:\windows\system32\config\default
   
   copy c:\windows\repair\system c:\windows\system32\config\system
   copy c:\windows\repair\software c:\windows\system32\config\software
   copy c:\windows\repair\sam c:\windows\system32\config\sam
   copy c:\windows\repair\security c:\windows\system32\config\security
   

3. Restart the computer

If this doesn't solve your problem, you may want to restore the original Windows XP boot setting , or you may want to consult the Expert-Exchange for answers ( remember to scroll to the bottom to get the answers!)