We recommend Kaspersky Internet Security. The video below will guide you through the installation process:. When you are removing a virus from your PC, it is a good idea to disconnect from the internet to prevent further damage: some computer viruses use the internet connection to spread. Are you unsure of how to do this? Some viruses are programmed to initiate when your computer boots up.
Deleting temporary files may delete the virus. However, it is not safe to rely on this. To ensure you rid your computer of viruses, it is wise to complete the following steps.
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. The third way your computer could become infected with a virus is if you open an attachment, or click on a link, in a spam email. Whenever you receive mail from a sender you do not know or trust, avoid opening it. If you do open it, do not open any attachments or click on any links. There are numerous signs to look out for that indicate your computer may have a virus.
Firstly, is your computer slowing down? If everything is taking longer than usual, your computer may have become infected. Secondly, look out for apps or programs that you do not recognize. If you see an app or a program appear on your computer that you do not remember downloading, exercise caution. It is a good idea to uninstall any software you do not recognize and then to run a virus scan using anti-virus or internet security software to check for threats.
Pop-ups that appear when your browser is closed are a tell tail sign of a virus. If you see these, take immediate action to remove the virus, by following the steps outlined above.
Another sign that your computer may have a virus is if apps or programs on your computer start behaving strangely. If they start crashing for no apparent reason, your computer may have a virus. Finally, a virus may cause your computer to start overheating. If this happens, investigate whether you have a virus using anti-virus or internet security software. Your computer can become infected with a virus via email, but only if you open attachments within a spam email or click on the links contained in them.
Simply receiving a spam email will not infect your computer. Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files.
Computer viruses also spread through downloads on the Internet. They can be hidden in pirated software or in other files or programs that you might download. Tip: For information about the symptoms of a computer virus, go to the Microsoft PC Security website. A worm is computer code that spreads without user interaction. Most worms begin as email attachments that infect a computer when they're opened.
The worm scans the infected computer for files, such as address books or temporary webpages, that contain email addresses. The worm uses the addresses to send infected email messages, and frequently mimics or spoofs the "From" addresses in later email messages so that those infected messages seem to be from someone you know.
Worms then spread automatically through email messages, networks, or operating system vulnerabilities, frequently overwhelming those systems before the cause is known. Worms aren't always destructive to computers, but they usually cause computer and network performance and stability problems.
A trojan horse is a malicious software program that hides inside other programs. It enters a computer hidden inside a legitimate program, such as a screen saver. Then it puts code into the operating system that enables a hacker to access the infected computer. Trojan horses do not usually spread by themselves. They are spread by viruses, worms, or downloaded software. Spyware can install on your computer without your knowledge. Spyware can track Internet search habits and can also redirect your web browser to a different website than you intend to go to.
A rogue security software program tries to make you think that your computer is infected by a virus and usually prompts you to download or buy a product that removes the virus. The names of these products frequently contain words like Antivirus, Shield, Security, Protection, or Fixer. This makes them sound legitimate. They frequently run right after you download them, or the next time that your computer starts. Rogue security software can prevent applications, such as Internet Explorer, from opening.
Rogue security software might also display legitimate and important Windows files as infections. Typical error messages or pop-up messages might contain the following phrases:. Do not click anything inside the dialog box. Are you sure you want to navigate from this page? Your computer is infected! They can cause data lost and file corruption and need to be treated as soon as possible.
Return to System Security and download it to secure your PC. Press OK to Continue or Cancel to stay on the current page. For more information see Protect yourself from tech support scams. Removing a computer virus or spyware can be difficult without the help of malicious software removal tools. Some computer viruses and other unwanted software reinstall themselves after the viruses and spyware are detected and removed. Fortunately, by updating the computer and by using malicious software removal tools, you can help permanently remove unwanted software.
For more information about how to remove a computer virus and spyware, see the following article in the Microsoft Knowledge Base: - Microsoft resources and guidance for removal of malware and viruses. Note A computer virus may prevent you from accessing the Microsoft Update website to install the latest updates. We recommend that you set the Automatic Updates service to run automatically so that a computer is not missing any important updates. Microsoft offers a free online tool that scans and helps remove potential threats from your computer.
To perform the scan, go to the Microsoft Safety Scanner website. Note the name of the rogue security software. For this example, we'll call it XP Security Agent When you are prompted, use the arrow keys to highlight Safe Mode with Networking , and then press Enter.
Click the Start button and check whether the rogue security software appears on the Start menu. If it's not listed there, click All Programs and scroll to find the rogue security software's name.
Right-click the name of the rogue security software program, and then click Properties. In the Properties dialog box, check the path of the rogue security software program that is listed in Target. Note The folder name frequently is a random number. In the Program Files window, click Program Files in the address bar.
Scroll until you find the rogue security software program folder. For example, XP Security Agent Go to the Microsoft Safety Scanner website. If you suspect that your computer is infected with rogue security software that was not detected by using Microsoft security solutions, you can submit samples by using the Microsoft Malware Protection Center submission form. Microsoft Defender Offline is an anti-malware tool that helps remove difficult to eliminate viruses that start before Windows starts.
Starting with Windows 10, Microsoft Defender Offline is built-in. Click Download the 32 bit version or Download the 64 bit version , depending on which operating system that you are running.
If you're unsure of which operating system that you are running, see Is my PC running the bit or bit version of Windows. When you are prompted, press a key to select an option to use to start your computer, such as F12, F5, or F8, depending on the kind of computer that you are using. Use the arrow key to scroll to the drive where you installed Microsoft Defender Offline file.
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