WHEA_UNCORRECTABLE_ERROR — Causes & Fix
Windows Stop code 0x00000124 (WHEA_UNCORRECTABLE_ERROR) means the Windows Hardware Error Architecture reported a fatal hardware error the system could not correct — a genuine hardware fault.
- Applies to
- Any Windows PC
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a failing CPU, faulty RAM, overheating, an unstable overclock, or power-delivery problems. This is a Windows Stop error (a "bugcheck" / blue screen) documented by Microsoft. The blue screen shows this code; more detail sits in the crash dump (%SystemRoot%\Minidump), which usually names the specific driver or component at fault — a free tool like BlueScreenView or WinDbg can read it.
Symptoms
- Blue screen citing WHEA_UNCORRECTABLE_ERROR
- Crashes under load; may worsen with heat
How to fix it
- 1
Remove overclocks and check temps
1. Reset CPU/RAM/GPU to stock (disable XMP/overclocks). 2. Check cooling and temperatures.
- 2
Test the hardware
1. Test RAM (MemTest86) and stress-test the CPU. 2. Check the PSU; replace faulty hardware.
Frequently asked questions
Is 0x124 always hardware?
Almost always — it is a fatal hardware error. Start by removing overclocks/XMP and checking temperatures, then test RAM, CPU, and power.
Last updated July 20, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.