The exception type 0x12 is a crucial component of the x64 architecture's error handling mechanism. It provides a standardized way for the processor to report error conditions to the operating system and allows the MCE handler to take corrective action.
The bank number in the MCE parameters tells you which part of the CPU reported the error:
The Machine Check Exception (MCE) is a special type of exception that occurs when the processor detects a hardware error. This could range from correctable and uncorrectable memory errors to internal processor errors. When an MCE occurs, the processor saves its state and invokes a handler to deal with the error.
If you are running an overclocked system (including XMP/DOCP profiles for RAM), revert to in your BIOS. If the 0x12 errors stop, your hardware was pushed past its stable limits. 3. Stress Test Components Use diagnostic tools to isolate the hardware: x64 exception type 0x12 machinecheck exception link
Overheating CPUs may trigger this as a safety shutdown.
After an MCE, the OS reads these banks to determine the fault source.
Dealing with MCEs involves both hardware and software troubleshooting steps: The exception type 0x12 is a crucial component
The error message "x64 Exception type 0x12 - Machine Check Exception"
The error message "x64 Exception Type 0x12 - Machine Check Exception"
In the x86/x64 architecture, interrupts and exceptions are identified by vectors. Vector 0x12 (decimal 18) is reserved exclusively for the . This could range from correctable and uncorrectable memory
Once you've identified the likely component, systematic testing can confirm the diagnosis:
An uncorrectable Machine Check Exception (MCE) has occurred indicating that the processor detected an internal machine error or a bus error, or that an external agent detected a bus error. Common Root Causes
A failing PCIe card, motherboard, or processor.
!!!! X64 Exception Type - 12(#MC - Machine-Check) CPU Apic ID - 00000000 !!!!