Processor · critical

How to fix0x00000124

WHEA_UNCORRECTABLE_ERROR (0x124)

What this error means

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.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Reset BIOS settings to system defaults

Reset BIOS settings to system defaults.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Monitor temperatures using HWInfo or HWMonitor

Monitor temperatures using HWInfo or HWMonitor.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Run memory diagnostics using MemTest86

Run memory diagnostics using MemTest86.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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04Check 12V voltage rail stability under load

Check 12V voltage rail stability under load.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible 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