How to Fix High CPU and Disk Usage in Windows 11 (2025 Guide)

How to Fix High CPU and Disk Usage in Windows 11
Fix 100% CPU or Disk Usage in Windows 11
#Windows11 #CPUUsage #diskusagefix
1. Restart Your PC
Sometimes, it's just a temporary glitch.

⚙️ 2. Disable Unnecessary Startup Apps
Press Ctrl + Shift + Esc to open Task Manager.

Go to Startup apps tab.

Disable unnecessary apps by right-clicking and selecting Disable.

🧠 3. Check Background Processes
In Task Manager, go to Processes tab.

Look for apps using high CPU (e.g., Chrome, Runtime Broker).

End task if not needed by right-clicking → End Task.

🔄 4. Update Windows and Drivers
Press Windows + I → Windows Update → Check for updates.

Update all available drivers, especially:

Graphics (Intel/NVIDIA/AMD)

Chipset

BIOS (from manufacturer's site)

🧰 5. Disable SysMain (Superfetch)
Press Windows + R, type services.msc, hit Enter.

Find SysMain, right-click → Properties → Set Startup type to Disabled → Click Stop.

🔧 6. Check Windows Defender or Antivirus
Defender or third-party antivirus might spike CPU usage.

Open Task Manager → check for Antimalware Service Executable.

If high, consider:

Full scan then restart

Switching to lighter antivirus like Bitdefender Free

⚡ 7. Change Power Plan
Go to Control Panel → Power Options

Select High performance (or Balanced) instead of Power saver

🚫 8. Disable Background Apps
Settings → Apps → Installed Apps

Turn off apps running in the background unnecessarily.
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