An is a Machine Check Exception (MCE) , which occurs when a processor's Machine Check Architecture (MCA) detects an unrecoverable hardware error . On server systems like the HPE ProLiant Gen10 , this typically triggers a Red Screen of Death (RSOD) and indicates a failure that the OS cannot handle. Common Root Causes
Before analyzing dumps, check the built-in hardware error log. x64 exception type 0x12 machinecheck exception link