cpu over temperature error
Moderate
Microsoft · Windows
The CPU has reached a dangerously high temperature and the system has halted or throttled to prevent permanent damage — the BIOS thermal protection has been triggered
Quick Answer
Error code CPU Over Temperature Error on your Microsoft Windows means: The CPU has reached a dangerously high temperature and the system has halted or throttled to prevent permanent damage — the BIOS thermal protection has been triggered. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Power off the system immediately and let it cool for 10-15 minutes before opening the case
2
Check that the CPU cooler is firmly attached — for Intel stock coolers, verify all 4 push-pins are locked. For AMD, check the retention bracket. For tower coolers, check the mounting screws
3
Remove the CPU cooler, clean old thermal paste from both the CPU and cooler base using isopropyl alcohol (90%+) and a lint-free cloth
4
Apply fresh thermal paste — a pea-sized dot in the center of the CPU is sufficient for most CPUs
5
Remount the cooler ensuring even pressure across the CPU surface
6
Improve case airflow: ensure at least one intake fan (front) and one exhaust fan (rear). Remove side panel temporarily to test if temperatures drop significantly
7
If overclocked, reduce the overclock or increase CPU voltage only if thermals allow
8
Boot the system and monitor temperatures in BIOS or with HWMonitor — idle should be 30-50°C, load should stay below 85°C
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Thermal paste (Arctic MX-4, Noctua NT-H1, or similar)
Replacement CPU cooler if current one is inadequate
Additional case fans if airflow is poor
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