Processor · critical

How to fixThermal Shutdown

PC shuts off without warning at load

What this error means

PC shuts off without warning at load ranks as a critical-severity processor (CPU) issue in our database. 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. The usual suspects are dried-out or incorrectly applied thermal paste, failing or disconnected CPU cooler fan or pump and dust accumulation clogging the heatsink fins. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Clean dust from heatsinks, fans, and vents
  1. Clean dust from heatsinks, fans, and vents
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Reapply high-quality thermal paste and remount cooler
  1. Reapply high-quality thermal paste and remount cooler
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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03Ensure cooler fan or liquid cooling pump is running
  1. Ensure cooler fan or liquid cooling pump is running
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

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