Which error code indicates a critical process failure leading to a BSOD?

The error code that indicates a critical process failure leading to a Blue Screen of Death (BSOD) is "CRITICAL_PROCESS_DIED." This specific error occurs when a critical process or thread in the Windows operating system has unexpectedly terminated. Such an event is critical because the operating system relies on certain processes to maintain stability and functionality. When these fail, the system cannot continue operating safely, prompting it to display a BSOD to prevent further damage or data loss.

Other codes represent different types of issues; for example, "MEMORY_MANAGEMENT" pertains to issues related to memory and can indicate potential problems with RAM or memory management features. "FILE_SYSTEM" indicates corruption or errors involving file system integrity. "ACCESS_DENIED" is an error that typically occurs due to permission issues when a user tries to access files or resources they do not have adequate rights for. Each of these codes signifies important problems, but they do not directly relate to the failure of a critical process within the operating system as "CRITICAL_PROCESS_DIED" does.