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Fix high CPU usage in Windows 11

High CPU usage in Windows 11 can slow down your system, cause overheating, and reduce battery life on laptops. Here’s a step-by-step guide to diagnosing and fixing high CPU usage issues.

Important Links:

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1. Check Task Manager

The first step is to identify which processes are consuming the most CPU.

  • Press Ctrl + Shift + Esc to open Task Manager.
  • Click on the Processes tab.
  • Sort by CPU usage to see which applications are consuming the most resources.
  • If you find an unnecessary or unknown process using excessive CPU, right-click and select End Task.

2. Disable Startup Programs

Too many startup programs can slow down your PC.

  • Open Task Manager and go to the Startup tab.
  • Disable unnecessary programs by right-clicking and selecting Disable.

3. Update Windows and Drivers

Outdated system files or drivers can cause CPU spikes.

  • Go to Settings > Windows Update and check for updates.
  • Update your drivers by going to Device Manager, right-clicking on components (like Display Adapters), and selecting Update driver.

4. Scan for Malware

Viruses and malware can cause high CPU usage.

  • Run Windows Security (Windows Defender) or use a trusted third-party antivirus to perform a full system scan.

5. Adjust Power Settings

Changing power settings can help optimize CPU performance.

  • Open Control Panel > Power Options.
  • Select Balanced or Power Saver instead of High Performance.

6. Disable Background Apps

Some apps run in the background and consume CPU.

  • Go to Settings > Apps > Installed Apps.
  • Click on an app, select Advanced Options, and disable Background Apps Permission.

7. Check for Windows Bugs and Fix Corrupt Files

  • Open Command Prompt as an administrator and run: 
    sfc /scannow
    This scans and fixes corrupt system files.
  • If issues persist, run: 
    DISM /Online /Cleanup-Image /RestoreHealth

8. Disable Superfetch (SysMain)

Superfetch, or SysMain, can sometimes cause CPU spikes.

  • Press Win + R, type services.msc, and press Enter.
  • Find SysMain, right-click, and select Properties.
  • Change Startup Type to Disabled and click Stop.

9. Reset Windows as a Last Resort

If nothing else works, you may need to reset Windows.

  • Go to Settings > System > Recovery.
  • Click Reset this PC and choose Keep my files to preserve personal data.

By following these steps, you should be able to reduce high CPU usage and restore system performance. If problems persist, consider checking for hardware issues like overheating or a failing processor.

Conclusion

High CPU usage in Windows 11 can have multiple causes, but with the right approach, you can diagnose and fix the issue. Regular system maintenance, software updates, and malware scans can help keep your PC running efficiently.

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