You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question Report abuse. Details required :. Cancel Submit. Hi, Thank you for posting your query on Microsoft Community. I would appreciate if you could answer few questions to narrow down the issue. Did you make any recent changes to the computer? The alert may request you to pass on the "warning" to "others in your address book" or "everyone you know". Broken or oddly phrased English.
The message is not addressed to a specified recipient, instead it is addressed to the 'account holder' or uses another generic title. If your computer has been infected, it may dramatically slow down.
Other signs that your computer has been infected include new desktop icons, new wallpaper or your default homepage is redirected to another site. Don't even click on the cross to delete the pop-up alert as this may result in getting more pop-ups. Use reputable pop-up blocker software to avoid pop-ups on your computer. Keep your computer updated with the latest anti-virus and anti-spy ware software. Also use a good firewall.
Now it is time to run a virus scan using your chosen anti-virus or internet security software. If a virus is found, it may affect multiple files.
If threats are found, quarantine or delete the files. Now that the virus is removed, you can reboot your computer. Simply turn it on as you would normally. To protect your computer from further attack, change all your passwords in case they were compromised.
This is only strictly necessary if you have reason to believe your passwords have been captured by malware, but it is better to be safe than sorry. Updating your software, browser and operating system will reduce the risk of flaws in old code being exploited by criminals to install malware on your computer. If you use a Mac, you may be under the impression that your computer cannot get a virus.
Unfortunately, this is a misconception. There are fewer viruses that target Macs compared with the many that target PCs, but Mac viruses do exist. Some Mac viruses are designed to trick users into thinking they are anti-virus products.
If you accidentally download one of these, your computer may be infected. If you think your Mac has a virus, here are six steps to follow to remove it:.
To ensure nothing is missed and to keep your Mac protected, consider installing a running an anti-virus solution if you do not already have one.
We recommend comprehensive internet security solution like Kaspersky Total Security. A computer virus is a type of malware malicious software designed to make self-replicate, i. Computer viruses are so-called because, like real viruses, they can self-replicate.
Once your computer is infected with a virus, this is how it spreads. When a computer virus infects your computer, it may slow it down and stops it working properly. There are three main ways that your computer may have become infected with a computer virus. The first way your computer could become infected from removable media, like a USB stick. If you insert a USB stick or disk into your computer from an unknown source, it may contain a virus. Another way your computer become infected with a virus is through a download from the internet.
If you are downloading software or apps to your computer, ensure you do so from a trusted source. Avoid downloading anything via a pop-up or a website you do not know. Skip to main content. February 21, How do I know if I already have antivirus software? Eve Blakemore. We can ensure this page stays updated with the most relevant information on how to help protect your PC with Windows Defender.
If your computer is running Windows 8 If your computer is running Windows 8, you already have antivirus software. If your computer is running Windows 7 Windows 7 includes spyware protection, but to protect against viruses you can download Microsoft Security Essentials for free.
Click the arrow button next to Security to expand the section. If your computer is running Windows Vista Windows Vista does not include virus protection.
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