The "Blue Screen of Death" (BSOD) is an error screen displayed by the Microsoft Windows operating system when it encounters a critical system error. This screen indicates that the system has crashed and cannot continue running safely. The BSOD typically includes error codes and messages that can help diagnose the underlying issue. Common causes of the BSOD include hardware failures, driver conflicts, or software bugs. When the BSOD appears, the computer usually needs to be restarted, and users may need to troubleshoot the problem to prevent future occurrences. Understanding the error codes can assist in resolving the issue effectively.