Why is my Windows 10 22H2 experiencing high CPU usage after an update?

Here are the steps to troubleshoot and fix high CPU usage on Windows 10 22H2 after an update:

1. Check Task Manager

• Press Ctrl + Shift + Esc to open Task Manager.
• Identify which processes are consuming high CPU resources.

2. Disable Startup Programs

• Press Ctrl + Shift + Esc to open Task Manager.
• Go to the Startup tab and disable unnecessary programs.

3. Run System File Checker (SFC)

• Open Command Prompt as an administrator.
• Type sfc /scannow and press Enter.

4. Run DISM Tool

• Open Command Prompt as an administrator.
• Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.

5. Adjust Power Settings

• Go to Settings>System>Power&sleep> Additional power settings.
• Select Balanced or Power saver mode.

6. Disable Sysmain (Superfetch)

• Press Windows + R, type services.msc, and press Enter.
• Locate Sysmain, right-click, select Properties, set Startup type to Disabled, and click Stop.

7. Check for Malware

• Run a full system scan using a reputable antivirus program to ensure no malware is causing high CPU usage.

8. Perform a Clean Boot

• Press Windows + R, type msconfig, and press Enter.
• Go to the Services tab, check Hide all Microsoft services, and click Disable all.
• Go to the Startup tab, click Open Task Manager, and disable all startup items.
• Restart your computer.

9. Update Windows

• Go to Settings>Update>Security>Windows Update.
• Check for updates and install any available updates.