Malware is one of the most common reasons a Windows PC becomes slow, unstable, or unsafe. You don’t need to be a tech expert to get infected. A fake download button, a cracked program, or a malicious browser extension is often enough.
The good news is that you don’t need paid software to fix the problem. Most malware infections can be removed completely using free, trusted tools that already work well on Windows.
This guide explains exactly how to remove malware from a Windows PC using free tools, without deleting personal files or damaging your system. The steps work on both Windows 10 and Windows 11.
What Is Malware?
Malware is short for malicious software. It is designed to harm your computer, spy on your activity, display unwanted ads, or steal personal information.
Common types of malware include viruses, trojans, spyware, adware, browser hijackers, and crypto-miners. Some malware is obvious, while other types run quietly in the background and slowly damage system performance.
Signs Your Windows PC May Be Infected
You should scan your PC for malware if you notice any of the following:
* The computer suddenly becomes very slow
* Random pop-up ads appear
* Your browser redirects to unknown websites
* Your homepage or search engine changes automatically
* Unknown programs appear on your system
* High CPU or disk usage when the PC is idle
* Antivirus settings are disabled without your permission
Even one of these signs can indicate malware.
Step 1: Disconnect From the Internet
Before starting malware removal, disconnect your PC from the internet. This prevents malware from downloading additional files, sending data out, or receiving commands from external servers.
You can reconnect once the system is clean.
Step 2: Run a Full Scan With Windows Security
Windows includes a built-in antivirus called Windows Security. It is capable of detecting and removing most common malware.
Open Windows Security, go to Virus and threat protection, select Scan options, choose Full scan, and start the scan. A full scan checks all system files, running processes, and hidden locations.
Let the scan finish completely. If threats are found, allow Windows to remove or quarantine them.
Step 3: Use a Free Malware Removal Tool
Some malware can hide from built-in antivirus programs. Using a second free malware removal tool helps detect adware, spyware, and browser hijackers that may be missed.
Download one trusted free malware scanner from its official website and run a full system scan. Remove everything it detects.
Avoid installing multiple scanners at the same time, as this can cause conflicts.
Step 4: Boot Into Safe Mode if Malware Persists
If malware keeps returning or blocks removal tools, restart your PC in Safe Mode. Safe Mode loads only essential Windows services, which prevents most malware from running.
Once in Safe Mode, run Windows Security and your malware removal tool again. Many stubborn infections can be removed at this stage.
Step 5: Uninstall Suspicious Programs
Open the Control Panel and go to Programs and Features. Review the list of installed software carefully.
Uninstall any programs that you do not recognize, especially those installed recently or with unclear names. Avoid removing system programs unless you are certain they are safe to remove.
Step 6: Disable Suspicious Startup Items
Malware often adds itself to Windows startup so it runs every time the PC boots.
Open Task Manager and go to the Startup tab. Disable startup items that have no publisher, look unfamiliar, or are unnecessary. This improves both security and boot speed.
Step 7: Clean Your Web Browser
Many malware infections target web browsers.
For each browser you use, remove unknown extensions and verify that the homepage and default search engine have not been changed. If browser problems continue, resetting the browser settings or reinstalling the browser can fully remove hidden threats.
Step 8: Update Windows and Installed Software
Outdated systems are easier targets for malware. After cleaning your PC, install all Windows updates and update browsers, drivers, and applications.
Security updates close vulnerabilities that malware exploits.
Step 9: Change Important Passwords
If malware was present, assume that sensitive information may have been compromised.
Change passwords for email accounts, banking services, social media, and cloud storage. Do this only after malware removal and preferably from a clean device.
When a Windows Reset Is Necessary
If malware continues to return even after following all steps, a Windows reset may be required. This completely removes all software and restores Windows to a clean state.
Before resetting, back up important files and ensure backups are not infected.
How to Prevent Malware in the Future
You can reduce the risk of future infections by following these habits:
* Download software only from official sources
* Avoid cracked or pirated programs
* Keep Windows Security enabled
* Install system and software updates regularly
* Be cautious with email attachments and pop-up ads
Most malware infections are preventable with basic awareness.
Final Thoughts
Removing malware from a Windows PC does not require paid software in most cases. Windows Security combined with a trusted free malware removal tool is enough to clean common infections.
By following the steps in this guide and keeping your system updated, you can restore performance, protect your data, and keep your PC secure.
For more Windows fixes, tutorials, and practical tech guides, visit fixyorio.com.