WHEA_UNCORRECTABLE_ERROR (0x124)

What is 0x00000124?

0x00000124 shows up as a critical-severity processor (CPU) fault. The Windows Hardware Error Architecture (WHEA) has detected an uncorrectable hardware exception. Most commonly caused by CPU core voltage instability, overheating cores, unstable memory profiles (XMP/EXPO), or physical damage to the processor socket. See the troubleshooting steps below for the fix.

Common Causes

• CPU core voltage (Vcore) drop under load
• Processor thermal throttling and overheating
• Unstable RAM overclock (XMP/EXPO profiles)
• Power Supply Unit (PSU) voltage sags

Step-by-Step Fix Guide

• 1
  Reset BIOS settings to system defaults

  Begin with Reset BIOS settings to system defaults; it's the step that resolves 0x00000124 for the largest share of reported cases.

• 2
  Monitor temperatures using HWInfo or HWMonitor

  Should symptoms return, move on to the next steps — they're written specifically for harder-to-catch cpu instability causes.

• 3
  Run memory diagnostics using MemTest86

  For lingering 0x00000124 cases, "Run memory diagnostics using MemTest86" is worth running through.

• 4
  Check 12V voltage rail stability under load

  This step, "Check 12V voltage rail stability under load", specifically rules out CPU core voltage (Vcore) drop under load.

Commands & Diagnostics

Frequently Asked Questions