These are the most common motherboard‑related Windows hardware error codes, what they mean, and how to fix them.
Motherboard Error Codes & Fixes
| Error Code | What It Means | Fix |
|---|---|---|
| 0x124 – WHEA_UNCORRECTABLE_ERROR | General hardware failure. Often VRM, chipset, or motherboard power delivery. | Check VRM temps, remove overclock, inspect motherboard for damage. |
| 0x9C – MACHINE_CHECK_EXCEPTION | Motherboard detected a serious hardware fault (bus, chipset, or PCIe). | Reseat components, inspect PCIe slots, check chipset cooling. |
| 0xA – IRQL_NOT_LESS_OR_EQUAL | Interrupt controller or chipset timing issue. | Reset BIOS, update BIOS, check for unstable overclock. |
| 0xF – CPU/Chipset Cache Error | Chipset or CPU cache returned corrupted data. | Update BIOS, check VRM temps, inspect motherboard power phases. |
| PCIe Bus Error | Motherboard PCIe lane or slot failure. | Reseat GPU, try another PCIe slot, inspect motherboard for bent pins. |
| Chipset Thermal Warning | Motherboard chipset overheating. | Improve airflow, clean dust, check chipset fan (if present). |
| BIOS Corruption Detected | Motherboard BIOS failed integrity check. | Reflash BIOS, use dual‑BIOS recovery, reset CMOS. |
| CMOS Checksum Error | CMOS settings corrupted or battery failing. | Replace CMOS battery, reset BIOS settings. |
| Embedded Controller Error | Motherboard EC firmware malfunction. | Update BIOS/EC firmware, power cycle system. |
| VRM Overcurrent / Undervoltage | Motherboard VRMs cannot supply stable power. | Remove CPU overclock, check VRM cooling, inspect motherboard for damage. |