Today one of my user has problem when booting his PC. The OS is Windows XP, the blue screen of death appears while booting, the problem is "The registry cannot load the hive (file): ".
Find the solution on Internet, first, boot from Windows XP CD-ROM, press 'R' to enter recovery mode; choose the Windows installation; then in command prompt, type
ren c:\windows\system32\config\software software.old
copy c:\windows\repair\software c:\windows\system32\config
Reboot the PC, Windows should boot normally. However, the applications in Add/Remove program control panel are gone. It is require to reinstall some application back.
If you are joining a Domain, type
gpupdate /force
After that, you should login to domain properly.
Source:
http://www.searchmarked.com/windows/how-to-recover-from-the-stop-c0000218-registry-file-failure-registry-cannot-load-the-hive-file-systemrootsystem32configsoftware-blue-screen-of-death-error.php