After an MCE, the OS reads these banks to determine the fault source.
CPU overheating, causing the processor to shut down or trigger an exception to prevent permanent damage.
An refers to a Machine Check Exception (MCE) , which is a critical hardware-level error detected by the CPU's Machine Check Architecture (MCA). It indicates that the processor has encountered an unrecoverable internal error, a bus error, or an error from an external agent like memory or a PCIe device . Core Technical Details Exception Vector: 18 (decimal) or 0x12 (hexadecimal).
The parameters in the bug check provide crucial clues. For modern x64 processors, the parameters typically are: x64 exception type 0x12 machinecheck exception link
: The most common causes are failing processors, faulty RAM sticks, or failing motherboard components. Heat & Power
: Often related to poorly seated or faulty expansion cards (GPU, RAID controllers, or NVMe drives). Memory (RAM) Issues
Dealing with MCEs involves both hardware and software troubleshooting steps: After an MCE, the OS reads these banks
WHEA_UNCORRECTABLE_ERROR (124) A fatal hardware error has occurred. Parameter 1: Bank number (0x3) Parameter 2: MCi_STATUS = 0xfe000000000c0f35 Parameter 3: MCi_ADDR = 0x1a3f0000 **Link: UPI Link 1 - Poisoned packet**
MCE 0x12: BANK=7 STATUS=0xbc000e000f000315 LINK=0x2
Here’s an informative breakdown of the , with links to further resources. It indicates that the processor has encountered an
This is considered a "catastrophic" error because the CPU cannot safely continue processing, forcing an immediate system halt (crash) to prevent data corruption.
The error is a critical hardware-level alert generated by a computer’s processor when it detects an uncorrectable, catastrophic system error. Typically encountered on enterprise servers like HPE ProLiant Gen10 platforms or virtualization environments running VMware ESXi, this crash halts operation completely. Unlike standard operating system crashes caused by corrupted software or drivers, a Machine Check Exception (MCE) triggers directly from the CPU's Machine Check Architecture (MCA) to protect hardware from severe physical damage. What is x64 Exception Type 0x12?