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Can AI remove a virus from my computer?

Half. AI can't scan or clean your computer, but it can walk you through safe steps with the security tools already built into your system and help you decide when to get professional help.

Verdict: Half-bot · AI helps, you finish✓ Tested 2 times in Llama 3.3 70B · Nov 3, 2026Written for ChatGPT, Claude or Gemini

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Half-bot

01Why half-bot

  • Removing malware needs software running on your computer, which a chatbot can't do.
  • AI is good at calm, ordered steps: disconnect, scan with built-in tools, change passwords.
  • It can warn you away from fake 'virus cleaner' downloads.
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02The prompt

Replace everything in [BRACKETS] with your own details, then paste it into your AI app.

prompt.txt
You are a computer security technician.

Computer and system: [WINDOWS OR MAC, VERSION]
What's happening: [POP-UPS, SLOWNESS, WARNINGS, WORD FOR WORD]
When it started and what I did before: [DETAILS]

Your task: walk me through cleaning this up safely.

Rules:
- MUST use only the security tools built into my system, or ones from official sources, and tell me how to find them.
- MUST tell me which passwords to change afterward, from a different device.
- NEVER tell me to call a phone number shown in a pop-up.
- Tell me when to stop and take it to a professional.

Give me: one step at a time, and wait for my result before the next.

Before you send your answer, silently check that you did ALL of these, and fix your answer if not:
- Tell me which passwords to change, and to change them from a different, clean device.
- End with one line on when to stop and get professional help (a repair shop or the maker's official support).

03Steps

  1. Don't call numbers or click links in pop-ups.
  2. Run the prompt on a different device if you can.
  3. Change important passwords from a clean device.

04What can go wrong

  • 'Virus' pop-ups are often scams themselves.
  • If banking details may be exposed, call your bank.

05What to use

Any major AI chat app.

06Our test runs

2 runs, each with a different made-up sample. 0 of 2 passed every check.

Run 1 · Llama 3.3 70B · graded by GPT-OSS 120BOct 9, 2026Passed with a catch

The made-up sample:

  • [WINDOWS OR MAC, VERSION]Windows 10 Pro, version 22H2 (build 19045.3324)
  • [POP-UPS, SLOWNESS, WARNINGS, WORD FOR WORD]A flashing pop‑up appears saying: “Your computer is infected! Click HERE to remove the threat now.” The system also feels sluggish, and a warning in the taskbar reads “Potential security risk detected – action required.”
  • [DETAILS]The issue began this morning after I opened an unexpected email attachment named “Invoice_2026.pdf” from an unknown sender. Before that I was browsing Facebook and checking news sites. I didn’t install any new software or updates.
  • Use only built‑in or official security tools and explain how to find them
  • Specify which passwords to change, from a different clean device
  • Give one step at a time and wait for user response
  • End with a line telling when to seek professional help
  • Didn't make up details we never gave it

What came back (excerpt):

To start cleaning up your system safely, first, we need to disconnect from the internet to prevent any potential malware from communicating with its command and control servers.
Read the full answer
To start cleaning up your system safely, first, we need to disconnect from the internet to prevent any potential malware from communicating with its command and control servers. Go to your Settings (you can find Settings by clicking on the Start button and then selecting the gear icon), then click on "Network & Internet," and toggle off the switch under "Wi-Fi" or click on "Ethernet" and then click on "Disconnect" if you're using a wired connection. This will disconnect your computer from the internet.

After disconnecting from the internet, open the Windows Security app (you can search for it in the Start menu by typing "Windows Security"). In the Windows Security app, click on "Virus & threat protection" and then click on "Quick scan" to start a scan of your system for malware. This will help identify any potential threats.

Once the scan is complete, we'll proceed with the next steps based on the results. 

Remember to change your email and any other relevant passwords from a different, clean device after we've completed the cleanup process.

Stop and take your computer to a professional if you're unsure about any step of the process or if the issue persists after following these instructions.

The answer gives multiple steps at once, violating the one‑step‑at‑a‑time requirement.

Run 2 · Llama 3.3 70B · graded by GPT-OSS 120BNov 3, 2026Passed with a catch

The made-up sample (a messier one):

  • [WINDOWS OR MAC, VERSION]Windows 10 Pro, version 22H2 (build 19045.3324)
  • [POP-UPS, SLOWNESS, WARNINGS, WORD FOR WORD]I keep getting pop‑ups that say “Your PC is infected! Click here to fix now!” and the system is extremely slow, with random “Low Disk Space” warnings even though I have 200 GB free.
  • [DETAILS]It started after I downloaded a free PDF editor from a site I found via a Google search. I opened the installer, clicked through a few ads, and then the computer started acting weird. I tried restarting, but the pop‑ups keep coming.
  • Provide step‑by‑step instructions one step at a time, waiting for user response
  • Specify which passwords to change, from a different clean device
  • End with a single line advising when to seek professional help
  • Use only built‑in or official tools and explain how to find them
  • Didn't make up details we never gave it

What came back (excerpt):

To start cleaning up your system safely, I recommend using the built-in Windows Defender to scan for malware.
Read the full answer
To start cleaning up your system safely, I recommend using the built-in Windows Defender to scan for malware. You can find Windows Defender by typing "Windows Defender" in the search bar next to the Start button and opening the "Windows Defender" app. Once open, click on "Virus & threat protection" and then select "Quick scan" to start a scan for malware. This will help identify and potentially remove any malicious software that may have been installed when you downloaded the free PDF editor.

After this issue is resolved, it's a good idea to change your Windows account password, as well as any other passwords you've used on this computer, from a different, clean device to ensure your accounts remain secure.

Stop and take your computer to a professional if you notice any signs of severe system compromise or if the issue persists after following the recommended steps.

Verify that the answer follows the required step‑by‑step format and lists specific passwords to change.

How each run works: we fill the prompt with a made-up sample, run it once in Llama 3.3 70B, and GPT-OSS 120B grades the answer against the prompt's own rules. Word limits are counted by code, and every quote flagged as made up is checked against the full answer. Your results can differ. How we test.

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