High CPU usage on Windows can cause the system to slow down or become unresponsive. The Windows Modules Installer Worker could be to blame.

An abnormal CPU usage could also be due to a buggy or outdated Windows build. If that's the case, installing pending system updates should help fix the problem and bring CPU usage back to normal.

PowerShell may cause High CPU usage if you are using an obsolete version of Windows 11/10. However, we have covered every possible solution to fix this problem.

If the Windows Event Log process is taking a high CPU, disk, memory, or power usage on your computer, here are the methods to fix the issue: End the Windows Event Log task from Task Manager.

If you use a lot of apps from the Microsoft Store, the App history tab can help identify how much CPU and network a particular UWP (Universal Windows Platform) app is using.