Windows XP could not start because the following file is missing or corrupt: WINDOWSSYSTEM32CONFIGSYSTEM or SOFTWARE
What if an error message "Windows XP could not start because the following file is missing or corrupt: \ WINDOWS \ system32 \ config \ system or software" – how fix your PC?
If you receive [...]

"Security Accounts Manager initialization no …" and recovery of Windows errors
Security Accounts or SAM is a component Windows Registry is stored in a database to store user passwords in hash format. If the file is deleted somehow, it is likely that attacker can connect your system account. Apart from these security breaches, [...]