X64 Exception Type 0x12 Machinecheck Exception Link

The error message "x64 Exception type 0x12 - Machine Check Exception"

Source: Triggered when the CPU identifies a failure it cannot correct itself, such as a parity error or a thermal trip. x64 exception type 0x12 machinecheck exception link

A Machine Check Exception is a special type of exception that occurs when the processor detects an error in its own operation. This can include a wide range of issues, such as: The error message "x64 Exception type 0x12 -

PCI Express Errors: Uncorrectable errors on the bus or from specific PCIe expansion cards. Stop overclocking

The exception type 0x12 refers to a specific type of Machine Check Exception known as the Machine Check Exception Link. This exception allows for the linking of error records to provide more information about a hardware error that occurred.

While the exception type 0x12 is a powerful tool for error handling, it also presents several challenges and limitations. Here are a few:

1. Stop overclocking. Reset BIOS to optimized defaults.
2. Test RAM. (MemTest86 for 24 hours).
3. Check thermals. (Monitor CPU VRM temperatures).
4. Review firmware. (Update BIOS/microcode).

What Is Exception 0x12 (Machine Check Exception)?

On x64 (and x86) architectures, exception vector 0x12 is the Machine Check Exception (MCE).
It is a hardware-initiated exception that indicates the CPU has detected an internal hardware error (e.g., cache errors, bus errors, memory errors, or uncorrectable ECC errors).