Back to Home

BSOD Codes

Complete guide to Blue Screen of Death (BSOD) error codes and how to fix them.

16 BSOD Codes
CRITICAL_PROCESS_DIED
Critical Process Died

A critical system process has terminated unexpectedly, causing Windows to crash.

SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
System Thread Exception Not Handled

A system thread generated an exception that the error handler didn't catch, usually caused by incompatible or corrupted drivers.

IRQL_NOT_LESS_OR_EQUAL
IRQL Not Less or Equal

A kernel-mode process attempted to access pageable memory at an invalid IRQL level, often caused by driver issues.

KERNEL_SECURITY_CHECK_FAILURE
Kernel Security Check Failure

The kernel detected a violation of security policies, often caused by corrupted system files or incompatible drivers.

PAGE_FAULT_IN_NONPAGED_AREA
Page Fault in Nonpaged Area

Windows attempted to read data that doesn't exist in memory, usually caused by faulty RAM, corrupted drivers, or system files.

SYSTEM_SERVICE_EXCEPTION
System Service Exception

A system service generated an exception that wasn't handled, often caused by driver or hardware issues.

DPC_WATCHDOG_VIOLATION
DPC Watchdog Violation

A deferred procedure call (DPC) routine took too long to execute, usually caused by storage or driver issues.

DRIVER_IRQL_NOT_LESS_OR_EQUAL
Driver IRQL Not Less or Equal

A driver attempted to access pageable memory at an invalid IRQL level, indicating a driver bug or incompatibility.

UNEXPECTED_KERNEL_MODE_TRAP
Unexpected Kernel Mode Trap

The kernel executed an invalid instruction, usually caused by hardware failure, corrupted drivers, or overheating.

VIDEO_TDR_FAILURE
Video TDR Failure

The graphics driver stopped responding and timed out, usually caused by graphics driver issues or overheating GPU.

MEMORY_MANAGEMENT
Memory Management

Windows memory manager detected a severe memory management error, often caused by faulty RAM or corrupted memory.

BAD_POOL_CALLER
Bad Pool Caller

A kernel-mode process attempted to perform an invalid memory pool operation, usually caused by driver bugs.

INACCESSIBLE_BOOT_DEVICE
Inaccessible Boot Device

Windows cannot access the boot device, often due to disk errors, driver issues, or hardware problems.

KMODE_EXCEPTION_NOT_HANDLED
Kernel Mode Exception

A kernel-mode program generated an exception that the error handler didn't catch, usually from driver issues.

NTFS_FILE_SYSTEM
NTFS File System Error

Windows detected corruption in the NTFS file system, often due to disk errors or bad sectors.

SYSTEM_SERVICE_EXCEPTION
System Service Exception

A system service generated an exception that wasn't handled, often caused by driver or hardware issues.