How To Speed Up A Slow Computer

May 23, 2026
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How to Speed Up a Slow Computer Step by Step

Introduction

Few things are more frustrating than a slow computer. Programs take forever to open, websites lag, and even simple tasks can feel like they take ages.

The good news is that in many cases, you can improve your computer’s speed with a few simple changes—and you don’t need to be a computer expert to do it.

In this beginner-friendly guide, I’ll walk you through how to speed up a slow computer step by step using safe and easy methods anyone can follow. I’ll explain what to expect during the process and help you avoid common mistakes along the way.

This guide is perfect for:

  • Beginners with little or no computer experience
  • Anyone frustrated with a slow PC
  • Anyone looking to improve performance without upgrading hardware

By the end, your computer should feel faster, smoother, and more responsive.

This post is part of my Speed Up Your PC Series, where I walk you through simple, step-by-step ways to improve your computer’s performance.
👉 View the full guide here: How to Speed Up Your PC: Beginner’s Complete Guide

What You’ll Need

Before we begin, here’s what you’ll need:

  • A Windows computer
  • About 15–30 minutes
  • A little patience while your PC processes changes

👉 No extra software is required for most of these steps.

Step-by-Step Instructions

1. Restart your computer

Save your work and restart your PC.

👉 You may notice some improvement immediately after rebooting.

2. Close unused programs

Exit any programs you aren’t actively using.

3. Open Task Manager

Press Ctrl + Shift + Esc on your keyboard.

👉 You should see a list of running apps and processes.

4. Check for high resource usage

Look for apps using large amounts of CPU or Memory.

5. Close unnecessary background apps

Select unneeded programs and click End Task.

6. Disable startup programs

Open the Startup tab in Task Manager.

👉 Too many startup apps can slow boot times significantly.

7. Disable unnecessary startup items

Select programs you don’t need and click Disable.

👉 If you need help, check out my guide on how to disable startup programs.

8. Open Storage settings

Click Start → Settings → System → Storage.

9. Check available disk space

Look to see how much free space your drive has.

👉 Low storage space can slow your computer down.

10. Delete temporary files

Click Temporary files and remove unnecessary items.

11. Uninstall unused programs

Go to Settings → Apps → Installed apps.

12. Remove programs you no longer use

Select unused software and click Uninstall.

👉 Be careful not to remove anything important.

13. Run a virus scan

Open your antivirus software and start a scan.

👉 Malware can cause major slowdowns.

14. Install Windows updates

Go to Settings → Windows Update.

15. Check for updates

Click Check for updates.

👉 Your PC may need to restart afterward.

16. Restart your computer again

Apply all changes with another reboot.

👉 Your PC should feel smoother and faster.

What to Expect

During this process, you may notice:

  • Programs closing suddenly after ending tasks
  • Your screen briefly flickering during updates
  • Restart times varying depending on your system

👉 After finishing, your computer should:

  • Start faster
  • Open programs more quickly
  • Feel more responsive overall

Common Problems and Easy Fixes

Problem: PC is still slow after restarting

Fix:

  • Continue through the remaining steps
  • Check for malware or low storage space

Problem: Not sure what to disable

Fix:

  • Only disable programs you recognize
  • Leave security software enabled

Problem: Storage is almost full

Fix:

  • Delete unnecessary files
  • Empty the Recycle Bin
  • Remove unused programs

Problem: Updates are taking too long

Fix:

  • Leave your PC plugged in and connected to the internet
  • Avoid shutting down during updates

Problem: Programs reopen automatically

Fix:

  • Disable them in Startup settings
  • Check background app permissions

Quick Tips for Beginners

✅ Performance Tips

  • Restart your PC regularly
  • Keep at least 10–20% free disk space
  • Close programs you aren’t using

🔒 Safety Tips

  • Only download software from trusted websites
  • Keep antivirus software enabled
  • Be cautious when uninstalling programs

⚠️ Beginner Mistakes to Avoid

  • Ending random system processes
  • Installing “PC cleaner” software from unknown sources
  • Disabling everything in Startup

When a Slow PC Might Be a Hardware Problem

Sometimes software fixes aren’t enough.

If your PC is:

  • Extremely old
  • Constantly freezing
  • Running out of memory
  • Using an older hard drive

…it may eventually need hardware upgrades like:

  • More RAM
  • An SSD upgrade
  • Better cooling

But for many beginners, the steps in this guide can still make a huge difference.

Continue the Speed Up Your PC Series

Want even better performance? Continue with these beginner-friendly guides:

Conclusion

That’s it—you’ve successfully taken steps to speed up your slow computer!

You:

  • Closed unnecessary programs
  • Disabled startup apps
  • Freed up storage space
  • Removed unused software
  • Checked for viruses and updates

Even small changes like these can make your PC feel much faster and easier to use.

Join the Conversation

Did these tips help speed up your computer?
Do you still have questions or performance issues?

Feel free to leave a comment and share your experience—I’d be happy to help!

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