Keyboard not working after login (In win 2k3)

[Apurv]

In Windows 2003 keyboard does not work after login.

1) Found services.exe in \windows\help folder
2) and a registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

Shell - Reg_SZ
Value - Explorer.exe %systemroot%\Help\services.exe

Solution. Killed the services.exe (under explorer.exe )running from %systemroot%\help folder using the procexp.exe utility.
and in the registry corrected the Shell value to Explorer.exe and deleted the entry c:\windows\help\services.exe