This post contains affiliate links
How to Scan Your PC for Viruses Step by Step
Introduction
If your computer has been acting a little strange—or you just want to make sure everything is safe—running a virus scan is one of the easiest and most important things you can do.
The good news? It’s simple, safe, and doesn’t require any technical experience.
In this guide, I’ll walk you through exactly how to scan your PC for viruses step by step, using clear instructions you can follow at your own pace. I’ll also explain what you’ll see along the way so nothing feels confusing or overwhelming.
This guide is perfect for:
- Beginners with little or no computer experience
- Anyone who wants to check their PC for viruses
- Anyone looking to keep their computer safe and secure
By the end, you’ll know how to run a scan (affiliate link for U.S. and Canada only) and feel confident doing it anytime you need.
What You’ll Need
Before we get started, here’s what you’ll need:
- A Windows computer
- Antivirus software (Windows Security or another free antivirus)
- An internet connection (optional but helpful)
- About 10–30 minutes, depending on scan type
👉 If you don’t have antivirus installed yet, check out my guide on installing free antivirus first.
Step-by-Step Instructions
1. Click the Start menu
Click the Windows icon in the bottom-left corner of your screen.
2. Type “Windows Security”
Start typing until you see Windows Security appear in the list.
3. Click on Windows Security
Click the app to open it.
👉 You should see a dashboard with several security options.
4. Click “Virus & threat protection”
Look for this option and click on it.
5. Click “Quick scan”
Find the Quick scan button and click it.
👉 This starts a fast scan of common problem areas.
6. Wait for the scan to begin
Give it a few seconds to start.
👉 You should see a progress bar and a timer.
7. Let the scan run
Avoid closing the window while it scans.
👉 Your computer may slow down slightly during this time.
8. Review the results
Wait until the scan finishes and shows results.
👉 You should see a message like “No current threats” or a list of detected items.
9. Click “Start actions” if threats are found
If anything is detected, click the button to fix it.
10. Restart your computer if prompted
Follow any restart instructions to complete removal.
👉 Your screen may go black briefly during restart—this is normal.
Optional: Run a Full Scan (More Thorough)
If you want a deeper check, follow these extra steps:
11. Click “Scan options”
This is located under the Quick scan button.
12. Select “Full scan”
Click the Full scan option.
13. Click “Scan now”
Start the full scan.
👉 This scan checks your entire system and takes longer.
What to Expect During a Virus Scan
Here’s what you might notice:
- A progress bar showing scan progress
- A timer estimating how long it will take
- Slight slowdown while scanning
- Notifications if threats are found
👉 A Quick scan usually takes 5–10 minutes, while a Full scan can take 30 minutes or more.
Common Problems and Easy Fixes
Problem: Windows Security won’t open
Fix:
- Restart your computer
- Try opening it again from the Start menu
Problem: Scan won’t start
Fix:
- Make sure your antivirus is turned on
- Restart your PC and try again
Problem: Scan is stuck or frozen
Fix:
- Wait a few minutes—it may still be working
- If nothing changes, close and restart the scan
Problem: Threats keep coming back
Fix:
- Run a Full scan instead of Quick scan
- Make sure your antivirus is updated
Problem: Computer is very slow during scan
Fix:
- This is normal during scanning
- Try running scans (affiliate link for U.S. and Canada only) when you’re not using the PC
Quick Tips for Beginners
✅ Performance Tips
- Run scans when you’re not using your computer
- Use Quick scans for regular checks
- Use Full scans once a week or if something feels off
🔒 Safety Tips
- Keep your antivirus updated at all times
- Avoid downloading files from unknown websites
- Don’t click on suspicious links or pop-ups
⚠️ Beginner Mistakes to Avoid
- Skipping scans for long periods
- Ignoring warnings from your antivirus
- Installing multiple antivirus programs (this can cause issues)
Conclusion
That’s it—you’ve successfully scanned your PC for viruses!
You:
- Opened your antivirus software
- Ran a Quick scan
- Learned how to run a Full scan
- Checked and handled any threats
Even if nothing was found, you’ve taken an important step in keeping your computer safe.
If you have any questions, ran into issues, or want to share your experience, feel free to reach out or leave a comment. I’d love to hear how it went for you!