How to Speed Up a Slow Windows 11 PC (2025 Guide)

Windows 11 looks great, but over time, your PC can slow down due to startup apps, background processes, and junk files. Don’t worry — you don’t need new hardware to make it fast again.

In this guide, we’ll show you 10 simple ways to speed up a slow Windows 11 PC and improve performance in just minutes.

💡 Also read: 10 Privacy Settings to Change on Windows 11 Right Now

⚙️ 1. Disable Startup Programs

Too many programs launching at startup can slow boot time and consume memory.

🛠️ How to Fix:

  1. Right-click the Taskbar → Task Manager
  2. Go to the Startup Apps tab
  3. Disable unnecessary programs

🚀 You’ll notice faster boot times instantly.

🧹 2. Run Disk Cleanup

Temporary files, cache, and system junk can take up valuable space and slow performance.

🛠️ How to Use:

  1. Search for Disk Cleanup in Start
  2. Select drive C: and remove temporary and system files

💡 For deeper cleaning, use tools like CCleaner or BleachBit.

🔋 3. Change Power Mode to “Best Performance”

Windows often uses balanced or power-saving modes by default.

🛠️ How to Enable:

  1. Settings → System → Power & Battery
  2. Under Power Mode, choose Best Performance

⚡ Maximizes CPU power for faster multitasking.

🧠 4. Uninstall Unused Apps

Old software and bloatware can waste disk space and resources.

🛠️ How to Remove:

  1. Settings → Apps → Installed Apps
  2. Click the three dots next to unused apps → Uninstall

🧩 Check: How to Detect and Remove Spy Apps from Your Phone

💽 5. Defragment or Optimize Your Drive

If you use an HDD (not SSD), defragmentation can improve speed and file access.

🛠️ How to Run:

  1. Search Defragment and Optimize Drives
  2. Select your drive → Click Optimize

💾 SSDs don’t need defragmenting — just trim optimization.

🔍 6. Scan for Malware or Viruses

Malware can secretly use system resources and slow everything down.

🛠️ What to Do:

  • Run a full scan with Windows Defender or
  • Use a trusted free antivirus tool like Bitdefender Free or Avast

🧠 See also: Best Free Antivirus Software for Windows and Android (2025)

🧩 7. Manage Background Apps

Many apps run in the background and use RAM unnecessarily.

🛠️ How to Disable:

  1. Settings → Apps → Installed Apps
  2. Select an app → Click Advanced Options
  3. Set “Background app permissions” to Never

🎯 Frees up memory for better performance.

📈 8. Update Windows and Drivers

Outdated drivers and system files can slow performance and cause errors.

🛠️ How to Update:

  1. Settings → Windows Update
  2. Click Check for Updates

🔧 Update GPU, Wi-Fi, and chipset drivers regularly.

📦 9. Use Storage Sense

Windows 11 includes Storage Sense — a built-in cleaner that automatically removes temp files and old downloads.

🛠️ How to Enable:

  1. Settings → System → Storage → Storage Sense
  2. Turn it on and schedule automatic cleanup

🧹 Keeps your disk clean without manual effort.

🧰 10. Reset Your PC (Last Resort)

If nothing works, resetting Windows can clear all clutter while keeping personal files intact.

🛠️ How to Reset:

  1. Settings → System → Recovery
  2. Click Reset this PC → Choose Keep my files

🧠 Gives your system a fresh start.

🏁 Final Thoughts

Speeding up Windows 11 doesn’t require expensive upgrades — just smart optimization. By following these 10 steps, your PC will run smoother, faster, and more efficiently.

🔐 Next read: How to Keep Your Data Safe on Public Wi-Fi