Processor · high

How to fixUCODE-0x1A

Processor microcode error

What this error means

This high-severity issue affects the processor (CPU). The processor's internal instruction set encountered an unknown exception. Typical causes include dried thermal paste, overclocking too aggressively, silicon degradation and weak power supply. 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 3 complete
01Improve cooling and repast

Improve cooling and repast.

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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02Increase LLC (Load-Line Calibration) in BIOS

Increase LLC (Load-Line Calibration) in BIOS.

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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03Undervolting

Undervolting.

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

  • Dried thermal paste
  • Overclocking too aggressively
  • Silicon degradation
  • Weak power supply