RAM is one of the most common sources of hardware errors that trigger MCEs:
| MSR | Index (hex) | Description | |----------------------|-------------|-------------| | IA32_MCG_CAP | 0x179 | Machine check capabilities (number of banks, extended features) | | IA32_MCG_STATUS | 0x17A | Indicates if MCE is in progress, and if restartable | | IA32_MCG_CTL | 0x17B | Global enable for MCE (if supported) | | IA32_MCi_CTL (i=0..n) | 0x400 + i 4 | Per-bank error enable | | IA32_MCi_STATUS | 0x401 + i 4 | Per-bank error status (error code, valid, uncorrectable, etc.) | | IA32_MCi_ADDR | 0x402 + i*4 | Address associated with the error (if valid) | x64 exception type 0x12 machinecheck exception link
If you are using a server (e.g., HPE ProLiant), check the Integrated Management Log (IML) via iLO (Integrated Lights-Out) to find the specific component failure. RAM is one of the most common sources
In the world of high-performance computing, the —better known as a Machine Check Exception (MCE) —is the digital equivalent of a "check engine" light for a server's most critical components. The Incident at DataCore The visual RSoD screen lacks the detailed error
When the Machine Check Exception is the underlying cause, Windows may instead trigger on older systems, or Bug Check 0x124 (WHEA_UNCORRECTABLE_ERROR) on Windows Vista and later through the Windows Hardware Error Architecture (WHEA).
The visual RSoD screen lacks the detailed error registers needed for a targeted fix. You must fetch the absolute hardware state from the server's management engine.
Before analyzing dumps, check the built-in hardware error log.