How to Clean up Computer Filled with Malware


In the ever-evolving digital landscape, computer security is paramount. As a computer user, encountering malware is an unfortunate reality. In this guide, I, Felix, will walk you through the process of cleaning up a computer infested with malware. We’ll explore essential steps, recommended tools, and practical tips to ensure your system is restored to a healthy state.


Understanding the Threat

Malware comes in various forms, including viruses, spyware, adware, and ransomware. These malicious programs can compromise your computer’s performance, steal sensitive information, and even render it unusable. Identifying the type of malware affecting your system is crucial for effective removal.

Step 1: Disconnect from the Internet: The first and immediate step is to disconnect your computer from the internet. This prevents the malware from communicating with its command and control servers, halting any further malicious activities.

Step 2: Boot into Safe Mode: Restart your computer and boot into Safe Mode. This ensures that only essential system processes are running, making it easier to identify and remove malware without interference.

Step 3: Install reputable Anti-Malware Software: Choose a reliable anti-malware program and install it on your computer. Examples include Malwarebytes, Bitdefender, or Avast. Ensure the software is up-to-date before initiating a full system scan.

Step 4: Run a Full System Scan: Perform a comprehensive system scan using your chosen anti-malware tool. This may take some time, depending on your system’s size and the extent of the infection. Once the scan is complete, review the results and quarantine or remove the identified threats.

Step 5: Manual Malware Removal (if necessary): In some cases, certain malware may evade automated scans. Conduct manual removal by investigating suspicious processes, files, or registry entries. Exercise caution and refer to online resources or seek expert advice if unsure.

Step 6: Update and Strengthen Security Measures: After removing the malware, ensure your operating system and security software are up-to-date. Regularly update your system to patch vulnerabilities and strengthen your computer’s defenses against future threats.

Example Scenario

Let’s consider a hypothetical situation. Your computer has been plagued by an aggressive adware that bombards your screen with unwanted pop-ups and redirects your web browser. You’ve identified the adware as the culprit using your anti-malware tool.

  1. Disconnect from the Internet: Immediately disconnect your computer from the internet to prevent further ads from loading.
  2. Boot into Safe Mode: Restart your computer and boot into Safe Mode to minimize the adware’s impact on system processes.
  3. Install Anti-Malware Software: Choose a reputable anti-malware tool and install it on your computer. Ensure the program’s virus definitions are up-to-date.
  4. Run a Full System Scan: Initiate a full system scan using the anti-malware tool. Allow the software to quarantine or remove the detected adware.
  5. Manual Cleanup (if necessary): Check your browser extensions and settings for any remnants of the adware. Remove suspicious extensions and reset your browser settings if needed.
  6. Update Security Measures: Update your operating system, anti-malware software, and browser to their latest versions to patch vulnerabilities.


Cleaning up a malware-infested computer requires a combination of automated tools and manual intervention. By following these steps and staying vigilant, you can effectively rid your system of malware and establish a more secure computing environment. Regularly practice good cyber hygiene, and consider implementing additional security measures to prevent future infections.