What Killer? - What exactly does it kill, again?

For those who want to completely disable the Windows Keyboard Key as well as the ability to click on the start menu. Create and run these reg files. Note, these must be run as an admin user.

This will disable the Windows Key on the keyboard from working. This also disabled CTRL+ESC from working too.
filename = disable_windows_key.reg

Code:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,03,00,00,00,00,00,5b,e0,00,00,5c,e0,00,00,00,00

Now to stop the Start Menu from working.

First you need to remove the default values
filename = remove_original_keys.reg

Code:

Windows Registry Editor Version 5.00

;; remove key for start menu before adding new keys to disable it
[-HKEY_CLASSES_ROOT\CLSID\{5b4dae26-b807-11d0-9815-00c04fd91972}]

Now we add the values to disable the start menu
filename = disable_start.reg

Code:

Windows Registry Editor Version 5.00

;; IMPORTANT!!! remove original key before creating these
;; add new keys to disable start menu
[HKEY_CLASSES_ROOT\CLSID\{-5b4dae26-b807-11d0-9815-00c04fd91972}]
@="Menu Band"

[HKEY_CLASSES_ROOT\CLSID\{-5b4dae26-b807-11d0-9815-00c04fd91972}\InProcServer32]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
  00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,53,00,48,00,\
  45,00,4c,00,4c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,00,00
"ThreadingModel"="Apartment"

The start menu will not respond when clicked on.

To reverse all of this we need to remove the registry keys that disable the start menu.
filename = remove_disable_keys.reg

Code:

Windows Registry Editor Version 5.00

;; Remove the disable keys before restoring default
[-HKEY_CLASSES_ROOT\CLSID\{-5b4dae26-b807-11d0-9815-00c04fd91972}]

Now we replace the keys for the original/default setting.
filename = restore_default.reg

Code:

Windows Registry Editor Version 5.00

;; Restore Default Keys for Start Menu
[HKEY_CLASSES_ROOT\CLSID\{5b4dae26-b807-11d0-9815-00c04fd91972}]
@="Menu Band"

[HKEY_CLASSES_ROOT\CLSID\{5b4dae26-b807-11d0-9815-00c04fd91972}\InProcServer32]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
  00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,53,00,48,00,\
  45,00,4c,00,4c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,00,00
"ThreadingModel"="Apartment"

I hope this helps anyone else trying to completely disable the start menu.