A Vista PC was infected with the FBI virus. I was able to remove it. After that, it booted to a command window trying to run the virus application, which could not be found.
Ran regedit and removed the key HKEY_CURRENT_USER\Software\Microsoft\Command Processor.
Now, it boots to a blank command window. I can run Task Manager and type explorer at the prompt and everything starts up just fine. I then have to exit the command window.
How can I change the registry so that it runs explorer without manual intervention?