The “CPU over temperature error” is astartup error messagerelated to the AMI-based motherboards.

When the motherboard detects theCPU temperature crossing a predefined limit(usually 90-100°C) for a certain amount of time, it will display this message on the next boot.

To better understand it, I tried to recreate it on my ASUS Prime B450 Plus system with AMD Ryzen 5 5600G CPU. I succeeded in two ways only— one by unplugging the CPU cooler and another by overclocking my CPU to 4500 MHz.

If you keep getting this issue, it meansyour CPU cooler is not able to properly cool down the CPU. In such cases,try to lower the overclock settingsorcheck for any issues with the CPU cooler.

If everything is working fine, your only option is toupgrade your cooling system.

Lower Overclock Settings

Overclocking (OC) is a good idea to get the most out of your CPU. However, if you overclock the device beyond its handling capacity, it will start overheating rapidly.

If so,lower the overclock settingsto a reasonable limit in such cases. For alow-spec PC, it’s better to disable overclockingaltogether.

If you used a program to overclock your CPU,lower the CPU ratiothrough the same app. If you tweaked the frequency and voltage settings on the BIOS,enter the BIOS/UEFIand lower these parameters manually.

you may alsoreset your motherboard BIOSto disable OC settings on the BIOS/UEFI. The easiest way to do so is to select theLoad Optimized Defaultsor a similar option on theUEFI’s Exittab.

Check CPU Cooler

Your CPU will also overheat to a very high degree due to certain issues with the CPU cooler.

Also, ensure thatnothing is obstructing the intake and exhaust ventson your computer, especially if you are using a laptop.

If you need touse your laptop on a bedor similar surface,use a stand or cooling padtoprevent any overheating.

Upgrade Cooling System

If you need to overclock your CPU or run heavy apps on your computer but your original cooling system is not up to par, upgrade it as soon as possible.

Tip for Experts:

Depending on your system, delidding your CPU can alsobring down its usual temperatureby 5-10°C or more.

If you are confident of being able to do so by yourself and need some extra cooling efficiency, check out our CPU Delidding guide to learn the proper process.

Consult Hardware Professional

Sometimes you may encounter this issue even if your CPU does not actually overheat so much (check with physical contact).

It usually happens when your computer’sthermal sensor becomes defective. Minor damage to some other components on the motherboard or CPU may as well cause this issue.

In such scenarios, seek professional help to diagnose and resolve the issue. You may need to replace faulty devices altogether.