PC shuts off without warning at load

What is Thermal Shutdown?

The Thermal Shutdown error is categorized as a critical-severity hardware processor (CPU) issue that can significantly impact your PC's stability. The system firmware or motherboard sensors detected temperatures exceeding critical safe operating limits (usually Tj Max of 95°C to 105°C), triggering an immediate emergency power cut to prevent permanent silicon damage. When experiencing the Thermal Shutdown fault, users often report sudden system crashes, unresponsive behavior, or a blue screen of death (BSOD). In most diagnostic scenarios, this problem is directly triggered by underlying hardware or software complications such as dried-out or incorrectly applied thermal paste, failing or disconnected CPU cooler fan or pump and dust accumulation clogging the heatsink fins. To permanently resolve the Thermal Shutdown issue and prevent further system degradation, it is highly recommended to follow our step-by-step troubleshooting guide below, ensuring your processor (CPU) components are functioning correctly.

Common Causes

• Dried-out or incorrectly applied thermal paste
• Failing or disconnected CPU cooler fan or pump
• Dust accumulation clogging the heatsink fins

Step-by-Step Fix Guide

• 1
  Clean dust from heatsinks, fans, and vents

  Applying the first fix (Clean dust from heatsinks, fans, and vents) addresses the most common root cause of Thermal Shutdown and restores baseline functionality.

• 2
  Reapply high-quality thermal paste and remount cooler

  If the problem persists, proceeding with the remaining steps ensures all edge cases related to processor instability are covered.

• 3
  Ensure cooler fan or liquid cooling pump is running