How to Remove Malware Without Formatting: Full Guide for 2025
Malware infections are frustrating. But don’t worry—you can remove malware without formatting your device or losing your files. Whether you’re dealing with spyware, ransomware, or browser hijackers, this guide covers step-by-step methods to detect and clean malware safely.
What Is Malware and Why You Don’t Need to Format Right Away
Malware is any malicious software designed to harm your device or steal data. Formatting is the last resort. Instead, try the safe methods below to fix malware issues while keeping your data intact.
Signs You Need to Remove Malware Without Formatting
Watch out for these common symptoms of infection:
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Slow computer performance
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Suspicious browser activity
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High CPU or RAM usage
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Pop-ups and fake ads
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Unauthorized programs or files
1. Boot in Safe Mode to Detect Malware on Windows
Booting into Safe Mode prevents malware from running at startup.
Steps for Windows 10/11:
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Press Shift + Restart
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Select Troubleshoot > Advanced Options > Startup Settings
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Press F4 to enter Safe Mode
2. Clear Temp Files Before Scanning
Temporary files may hide malware. Clearing them helps speed up scans.
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Press
Windows + R, typetemp,%temp%, andprefetch -
Delete files from each folder
3. Use Windows Defender to Detect and Remove Malware
Don’t underestimate Windows Security. It detects common malware threats.
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Go to Settings > Windows Security > Virus & Threat Protection
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Click Full Scan
🛡 Need a more advanced option? Use a malware removal tool like:
✅ These tools specialize in advanced threats that Windows Defender might miss.
4. Manually Remove Malware from Installed Programs
Knowing how to remove malware manually helps when tools don’t work.
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Go to Control Panel > Programs > Uninstall a Program
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Look for apps with random names or unfamiliar publishers
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Remove suspicious software
Also, press Ctrl + Shift + Esc to open Task Manager
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Go to Startup tab
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Disable unfamiliar entries
👉 Want help optimizing your PC performance after malware removal? Read Our Guide to Speed Up Slow Windows PCs
5. Clean Browser Hijackers and Reset Settings
If your browser is acting strangely:
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Remove unknown extensions
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Reset homepage and search engine
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Clear cookies and cache
For Chrome:
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Go to Settings > Reset and clean up > Restore settings
6. Check Background Activity with CMD (Command Prompt)
Advanced users can detect malware on Windows via network activity:
Match suspicious PIDs with Task Manager processes and kill if needed.
7. Restore Your System (Optional but Safe)
If all else fails, use System Restore to roll back changes.
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Go to Control Panel > Recovery > Open System Restore
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Choose a clean restore point
How to Prevent Future Malware Infections
Avoid getting infected again by following these tips:
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Use a reputable antivirus
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Keep Windows and apps updated
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Avoid clicking on suspicious emails or ads
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Download only from trusted sources
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Use browser extensions like AdBlock — block ads across the web for ad blocking
👉 Explore our full list of Top Free Antivirus Software for Windows
Conclusion: Remove Malware Without Formatting, Safely
You now know how to remove malware without formatting your system. With these tools and techniques, you can protect your files and restore your PC to a clean, working state.
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FAQs: Malware Removal Without Formatting
1. Can I remove malware without losing my files?
Yes, most malware can be removed using security tools and manual steps, no formatting required.
2. Which is the best free malware removal tool?
Malwarebytes and ESET Online Scanner are two of the best free options available.
3. My antivirus didn’t detect anything. Am I safe?
Not necessarily. Use multiple tools like Malwarebytes or HitmanPro to confirm.
4. Should I reset my browser after malware removal?
Yes, resetting your browser can eliminate persistent adware or hijackers.