What is CPU-THERMAL-THROTTLE?
This high-severity issue affects the processor (CPU). This diagnosis detects processor speed limitation events (Event ID 37 or 196 in the Windows System Event Log). The CPU reached its thermal limit and activated throttling to prevent hardware damage, resulting in system slowdowns or shutdown warnings. It's most often caused by dusty radiator and poor cooling. Use the steps below to track down and fix the cause.
Common Causes
- Dry thermal paste
- Dusty radiator
- Poor cooling
Step-by-Step Fix Guide
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1
Replace the thermal paste
Replace the thermal paste is the first thing worth trying, since it resolves CPU-THERMAL-THROTTLE for most affected systems.
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2
Clean the radiator
If the problem isn't fully resolved yet, the remaining steps rule out the less frequent cpu instability triggers.
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3
Add case fans
"Add case fans" covers a less common but documented cause of CPU-THERMAL-THROTTLE.
Commands & Diagnostics
powershell.exe Get-WinEvent -FilterHashtable @{LogName='System'; Id=37} -ErrorAction SilentlyContinue
powershell.exe Get-CimInstance Win32_Processor | Select-Object Name, MaxClockSpeed, CurrentClockSpeed
Frequently Asked Questions
CPU-THERMAL-THROTTLE is most often triggered by dry thermal paste. Other reports point to dusty radiator and poor cooling as contributing factors.
"Replace the thermal paste" clears up most CPU-THERMAL-THROTTLE reports by itself. The remaining steps above cover what's left.
Rated high severity — CPU-THERMAL-THROTTLE isn't immediately destructive, but recurring instances are a sign to fix it sooner rather than later.
Usually. CPU-THERMAL-THROTTLE is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Not necessarily. CPU-THERMAL-THROTTLE can be triggered by software and driver issues, overclocking instability, or BIOS misconfigurations — not just hardware failure. Run through the diagnostic steps above before concluding the processor itself is defective.
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