Sometimes, there’s nothing strange in Task Manager, but the CPU still hits a high activity percentage. We’ve prepared a list of applicable solutions that should help you address this issue.

Why is my CPU at 100% when nothing is running?

While this seems to be a strange situation, there are a few regular culprits. Amongst them are:

Malware or virus – Many computer problems that seem hard to identify are triggered by some malware and will only be detected using a good antivirus. Background programs – In many cases, you do not typically need to start these programs, but they run automatically. So even if you think you have not launched any program, something may be running. Problems with Windows Management Instrumentation – This service is a service that frequently misbehaves and can inflict CPU spikes. Its main use is to manage the execution of various background systems in a network.

If you notice that your CPU usage jumps to 100 for no reason, you should try some of the fixes below.

How do I fix high CPU usage when nothing is running?

1. Scan your computer

1.1 Using third-party tools

The worst scenario for high CPU usage when nothing pops up in Task Manager is a virus infection or malicious software that runs in the background. To stay safe from any ransomware or other type of viruses that can lead to computer damage, we recommend you use ESET Internet Security. It is easy to install and takes only a few minutes for the entire installation process. Moreover, it has lightweight settings that will not interfere with your system or cause interruptions. Why is my CPU at 100 when nothing is running? Well, a virus infection can be the answer to this question. Using ESET you will stay secure from such viruses.

1.2 Using Windows inbuilt tool

2. Disable background programs

It’s easy to disable background programs and you can perform it using Task Manager app to close unused applications from your PC. SPONSORED

  1. Select the Startup tab.

  2. Select every program that you don’t need to start alongside Windows and click the Disable button.

  3. Close Task Manager, and in the Windows Search bar, type msconfig and open System Configuration.

  4. Select the Services tab, check the Hide all Microsoft services box, and click the Disable button.

  5. Restart your PC.

3. Restart Windows Management Instrumentation

4. Check Advanced Power Settings

Certain plans will apply a high CPU percentage, which you’ll not want to do when the Minimum Processor State is at hand. You should go for the bare minimum of 5%.

5. Reset your PC

All of the above solutions should help you when dealing with CPU at 100 for no reason. If you have any questions or maybe an alternative solution for this issue, share them with us and other affected readers. You can do so in the comments section below.

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