WHEA_UNCORRECTABLE_ERROR (0x00000124) hardware CPU or PCIe crash
Hardware error detected by Windows Hardware Error Architecture (WHEA) caused by unstable CPU voltage, bad undervolt, or PCIe fault.
Internal desktop parts run on harmless 12V DC voltage and cannot shock you. Simply unplug the wall power cable first, then touch the unpainted metal case frame to ground static electricity.
Common Symptoms & Tells
- Blue screen stop code: WHEA_UNCORRECTABLE_ERROR
- Bugcheck parameter 1 = 0x00000000 (Machine Check Exception)
- Crashes under gaming load or when idle after overclocking or undervolting
Interactive Fix Checklist
0 of 3 steps completedReset all CPU Curve Optimizer and undervolts to stock in BIOS
Enter and reset CPU voltage settings to factory stock. If using AMD Curve Optimizer or Intel Voltage Offset, set to 0. A negative curve that is unstable at light loads causes immediate WHEA crashes.
Inspect WHEA record in Event Viewer (Event ID 18/19)
Open Windows Event Viewer -> Windows Logs -> System. Filter by Event Source 'WHEA-Logger'. Look for Event ID 18 (Machine Check Exception) and note the 'APIC ID' to determine which specific CPU core failed.
Update motherboard BIOS for CPU microcode stability
Ensure motherboard is updated. Both Intel 13th/14th Gen (0x129 microcode) and AMD Ryzen 7000/9000 series rely on critical AGESA microcode updates to prevent voltage degradation crashes.
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