Windows failed to load because the system registry file is missing or corrupt. Status:Oxc000014C

1. Lunch Recovery from windows installation CD.
2. For the Windows to work you must have the following files in C:\Windows\system32\config\ folder:
components, default, sam, security, software and system
3. Probably some of them are missing or corrupted. However, Windows makes a backup copy of them in the RegBack folder. You may restore them using commands like below:

CD C:\Windows\system32\config\RegBack
copy SYSTEM.OLD C:\Windows\system32\config\SYSTEM