1. Navigate to
2. If there is a key named "OldUserinit", delete the "Userinit" key and rename the "OldUserinit" key to "Userinit".
3. The "Userinit" key should now say
"WINDOWS_PATH" is relative to where you have your windows installed.
Mine would be "C:WINDOWSsystem32userinit.exe,"
Now you can log in again
Who changed my Userinit key?
Spyware. The program is called "Search Assistant" and is located at "Program FilesWindowsSA". It also has some "omni*.*" files in "WINDOWSsystem32" dir that are linked to "Userinit" key. If you remove this spyware (using Ad-aware, etc.) the "omni*.*" files are deleted and you can't log in.
How to edit registry when I can't log in?
- Use recovery console - read the manual or browse the web on how to edit registry in recovery console.
- Use another machine on your network: Open regedit and select "File->Connect Remote Registry..." and in the dialog box select computer that has log in problems to view its registry.
Rename the userinit.exe to wsaupdater.exe
Fix Windows XP Log On/Log Off Loop