How do you reduce CPU usage in Windows 10?

 Some users complained about high CPU usage after installing the update and result not showing up in Windows Search. Microsoft says that these issues are related to SearchUI.exe and only occur for users who have disabled searching the web using Windows Search.

The company is working on a fix, and an update will be released sometime around the middle of September.

Ironically, KB4512941 is a non-security update released to prevent excessive CPU usage when a user jumps between apps or hovers over the Taskbar. Being an optional update, it didn’t automatically install on Windows 10 device and so didn’t affect a huge number of users.

It also addresses other issues such as preventing blank tiles from appearing on the Start Menu, fixing Spatial Audio issues for games, fixing black screen that appears during Remote Desktop connections, etc.

The high CPU usage is a problem common to many Windows users There could be many other reasons that can trigger high CPU usage on a machine, for instance, it can be caused by the ntoskrnl.exe process on Windows 10.

Quick Fix 1. End Task of running programs to fix high CPU usage error in Windows 10 Fall Creators

This fix can help you quickly end high CPU usage issue in Windows 10 Fall Creators when your PC becomes extremely slow or even get stuck with running programs:

1. Press Ctrl + Alt + Del keys at the same time to bring up Task Manager;

2. Select "Task Manager" > Check and select programs that are taking high memory and CPU usage > Click "End Task" to close selected programs or apps.

Quick Fix 2. Disable Startup programs, fix file system error and clean up junk files to fix high CPU usage issue

1. Disable Startup programs that take high CPU and slows PC

1. Press Win + R to bring Run dialog > Type: MSConfig to open Task Manager;
2. Click on Startup on "Task Manager "> Select and right-click on unnecessary programs or apps > Select "Disable" to stop them running from Startup.

2. Disable Superfetch and Windows services to fix Windows high CPU usage

1. Press Ctrl + Shift + Esc to open Task Manager;
2. Go to "Services" tab and click "Open" services;
3. Navigate and locate Superfetch, right-click on it and select "Properties";
4. Click "Stop" to end the Superfetch service and click OK to confirm the change.

5. Press Win + R to open Run dialog > Type: MSConfig and click OK;
6. Check "Hide all Microsoft services" under Services tab > Uncheck all other remaining services > "OK" to save all changes;
7. Restart Windows 10 Fall Creators > Enable any services individually and reboot PC > Repeat the process till Windows 10 Fall Creators high CPU usage issue gets fixed by then.

Method 3. Use Registry Editor to fix Windows 10 Fall Creators high CPU usage error

Note: One thing that you should know is that Registry Editor may clear and remove some useful files on your PC while running below clear command to fix high CPU usage issue in Windows 10 Fall Creators.
Therefore, please do remember to back up important files and data to an external storage device before you trying below tips.

1. Press Win + R to open Run dialog and type: Regedit, hit Enter;
2. Follow the path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management;
3. Find: "ClearPageFileAtShutDown" and set its value to 1;
4. Restart the computer and then CPU high usage issue will be fixed.

Thanks,

Shivraj Kaithwas

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