: Uncorrectable ECC errors where bits flip in a way the hardware cannot resolve.
: Severe overheating due to clogged heatsinks or failed fans can trigger an MCE to prevent permanent damage. x64 exception type 0x12 machinecheck exception link
Look for preceding errors like "Uncorrectable PCI Express Error" or "Fatal Memory Error" to narrow down the culprit. : Uncorrectable ECC errors where bits flip in