Windows 11 is sleek, modern, and loaded with new features—but like any operating system, it can start to slow down over time. Temporary files pile up, unused apps hog resources, and background processes eat away at performance. The good news? You can bring back that fresh, snappy feel by giving your PC a proper clean-up.
In this guide, I’ll walk you through step-by-step methods to clean and optimize Windows 11 for better speed and performance. From built-in tools to advanced tweaks, you’ll learn everything you need to keep your system running smoothly.
Why Cleaning Windows 11 is Important
Think of your computer like a closet. The more stuff you cram in there, the harder it becomes to find what you need. Similarly, as your Windows 11 machine collects junk files, unused apps, and clutter, performance takes a hit. Cleaning your PC:
- Frees up storage space
- Improves startup times
- Reduces system crashes
- Extends hardware life
- Keeps everything running efficiently
Step 1: Remove Temporary Files with Storage Sense
What Are Temporary Files?
Temporary files are leftover data created by apps, updates, and Windows itself. Over time, these files can eat up gigabytes of space.
How to Use Storage Sense
- Press Windows + I to open Settings.
- Go to System > Storage.
- Toggle on Storage Sense.
- Select Run Storage Sense now to clear unnecessary files.
This simple step alone can reclaim a surprising amount of disk space.
Step 2: Uninstall Unnecessary Apps
Why Remove Apps?
Pre-installed apps (also called bloatware) and old programs take up storage and run in the background, slowing things down.
Steps to Uninstall
- Press Windows + I → Apps → Installed apps.
- Scroll through the list and select apps you don’t use.
- Click Uninstall.
Pro tip: If you’re unsure about an app, search its name before removing it.
Step 3: Disable Startup Programs
The Startup Problem
Too many programs launching at startup make boot times painfully slow.
How to Fix
- Press Ctrl + Shift + Esc to open Task Manager.
- Click on the Startup apps tab.
- Disable unnecessary apps by right-clicking and selecting Disable.
This can significantly speed up your boot process.
Step 4: Clear Browser Cache and Cookies
Why This Matters
Browsers like Chrome, Edge, and Firefox store cached files and cookies. Over time, these build up and affect browsing speed.
Quick Clean Steps
- In Microsoft Edge: Go to Settings > Privacy, search, and services > Clear browsing data.
- In Google Chrome: Press Ctrl + Shift + Del → Select Cached images and files + Cookies → Clear data.
Do this regularly for faster web performance.
Step 5: Run Disk Cleanup
Windows 11 still has the classic Disk Cleanup tool, which is super effective.
Steps
- Press Windows + S and search for Disk Cleanup.
- Choose your system drive (usually C:).
- Check boxes for Temporary files, Recycle Bin, Thumbnails.
- Click OK → Delete Files.
Step 6: Optimize Your Hard Drive
For HDD Users
If you’re using a hard disk drive (HDD), fragmentation can slow things down.
- Press Windows + S, search for Defragment and Optimize Drives.
- Select your drive and click Optimize.
For SSD Users
Good news—SSD users don’t need defragmentation. Windows automatically runs TRIM for SSD optimization.
Step 7: Update Windows and Drivers
Why Updates Matter
Outdated software causes performance issues and security risks.
Update Steps
- Press Windows + I → Windows Update.
- Click Check for updates.
- For drivers: Use Device Manager or Windows Update to keep them current.
Step 8: Manage Background Apps
Some apps keep running in the background even when not in use.
How to Disable
- Open Settings > Apps > Installed apps.
- Select an app → Click Advanced options.
- Under Background app permissions, choose Never.
This reduces unnecessary CPU and RAM usage.
Step 9: Clean the Registry (Carefully!)
The Windows registry can collect broken or outdated entries. While Windows manages it well, occasional cleaning can help.
⚠️ Caution: Only use trusted tools like CCleaner if you’re not comfortable editing manually. Deleting the wrong key can break Windows.
Step 10: Empty the Recycle Bin
Sounds obvious, but you’d be surprised how much space hides there.
Quick Way
- Right-click on the Recycle Bin icon → Select Empty Recycle Bin.
Step 11: Adjust Visual Effects for Speed
Windows 11 looks gorgeous, but animations can slow down older PCs.
How to Adjust
- Press Windows + S and type Performance options.
- Select Adjust the appearance and performance of Windows.
- Choose Adjust for best performance or manually disable effects.
Step 12: Use Windows Security Scan
Malware can be a hidden reason for sluggish performance.
Steps
- Open Settings > Privacy & security > Windows Security.
- Run a Quick Scan or Full Scan.
Step 13: Free Up OneDrive Space
If you sync files with OneDrive, unnecessary cloud syncing can eat resources.
- Right-click on OneDrive icon → Settings → Choose folders → Deselect unused ones.
Step 14: Reset Windows (Last Resort)
If your system is still lagging badly after cleaning, a reset may be the best option.
Steps
- Open Settings > System > Recovery.
- Click Reset this PC.
- Choose Keep my files or Remove everything.
Extra Tips for a Cleaner Windows 11 Experience
- Keep your desktop clutter-free—store files in folders instead.
- Regularly uninstall trial software and old games.
- Restart your PC once in a while—just like us, it needs a breather.
Final Thoughts
Cleaning Windows 11 isn’t just about freeing up space—it’s about keeping your system healthy, fast, and reliable. With these steps, you can transform a sluggish PC into one that feels brand new. The trick is to make cleanup a habit, not a one-time thing.
FAQs
1. How often should I clean my Windows 11 PC?
Once a month is a good routine for most users.
2. Is third-party cleaning software safe to use?
Some are safe (like CCleaner), but stick to built-in Windows tools when possible.
3. Will cleaning Windows 11 delete my personal files?
No, unless you reset your PC and choose the “Remove everything” option.
4. Does disabling startup apps improve gaming performance?
Yes, fewer background processes free up RAM and CPU for games.
5. Can I clean Windows 11 without admin rights?
Some tasks like uninstalling apps or running Disk Cleanup require admin privileges.