Forum Discussion

HermanWeber's avatar
HermanWeber
Tin Contributor
Jul 30, 2026

Windows 11: Excessive Background CPU Usage by System Processes

Even when I'm not running any intensive applications. This excessive background activity is causing slow performance, lag, and overheating, making it difficult to use my computer efficiently. Despite...
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KapilArya's avatar
KapilArya
MVP
Jul 30, 2026

Try to perform clean boot, see if it helps you to eliminate processes causing high CPU usage:

https://support.microsoft.com/en-US/Windows/Experience/Startup-Boot/how-to-perform-a-clean-boot-in-windows

Additionally, I recommend to fix system files corruption:

  1. Search for 'command prompt' using Windows Search.

 

  1. From results, right click on Command Prompt and select Run as administrator.

 

  1. Type sfc /scannow command and press Enter key.

 

  1. Let the command complete and then reboot the machine.

 

If that doesn't works, try these steps:

 

  1. Search for 'windows powershell' using Windows Search.

 

  1. From results, choose Windows PowerShell and select Run as administrator.

 

  1. Then type/paste following and press Enter key:

 

Repair-WindowsImage -Online -RestoreHealth

 

  1. Let the command complete, restart your system then.

 

Let us know if this helps!