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There are thousands of viruses, software programs, and security threats that can harm your computer, allow private information to be accessed by others, or make the computer perform slower. It is important to protect your PC by installing antivirus software and keeping the antivirus definitions up to date. Step 1: Check your computer for installed antivirus software Many HP computers come with Windows Defender or trial versions of other antivirus software apps already loaded. Before installing antivirus software, use one of the methods below to see if antivirus software is already installed and enabled on your device.
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There are thousands of viruses, software programs, and security threats that can harm your computer, allow private information to be accessed by others, or make the computer perform slower. It is important to protect your PC by installing antivirus software and keeping the antivirus definitions up to date. Step 1: Check your computer for installed antivirus software Many HP computers come with Windows Defender or trial versions of other antivirus software apps already loaded.
Before installing antivirus software, use one of the methods below to see if antivirus software is already installed and enabled on your device. Renewing your subscription helps protect your system against new threats. Check for a security icon in the system tray Check for a security software icon in the system tray area of the Windows taskbar. Move the mouse pointer along the lower right corner of the Windows desktop, over the icons near the clock, and then read the text above each icon to find a security software icon.
You might need to expand the system tray to show hidden icons. Common security software icons Right-click the security icon to open the security software and make sure the software is enabled. Search your computer for antivirus software If you could not find a security software icon in the system tray or you are still not sure if your computer has security software, check Security and Maintenance or Action Center for security software.
Open Security and Maintenance or Action Center, depending on your operating system. Windows Using the search box on the taskbar, search for and open Security and Maintenance. Windows 8: From the Start screen, type Action Center to open the Search charm, and then select Action Center from the list of results.
Windows 7: Click Start , type action center in the Search field, and then select Action Center in the list of results. Click the arrow in the Security category to expand the list of security items, and then check the Virus protection area for security software. The security information displays. Example of the Virus protection area If antivirus software is installed and enabled, skip to Update antivirus software definitions. If antivirus software is installed, but not on, enable the software, and then skip to Update antivirus software definitions.
If antivirus software is not installed, continue to the next step. Step 2: Install antivirus software If antivirus software is not installed, HP recommends you install antivirus software. New viruses are created and released often, and without antivirus software, the files and folders on the computer are at risk. If you found antivirus software on your computer in the previous step, skip to the next step. Other HP computers might come with free trial versions of other antivirus software.
These trial versions are usually limited versions that can be kept up to date for a specific period. After the period expires, your computer becomes more vulnerable to new viruses and security threats. It is important to upgrade or refresh the subscription to keep virus definitions current and continue protecting your computer. Many ISPs offer free or inexpensive antivirus software to their subscribers.
If you have antivirus software installed, but want to install different antivirus software, make sure to remove the old antivirus software before installing new software. Having multiple programs installed might make the computer slow, erratic, and potentially unprotected. Step 3: Update antivirus software definitions Because new viruses are created and released often, regularly update the virus definition files for the antivirus software.
A virus definition file is a list of known viruses that the antivirus software uses to find and eliminate viruses. The following steps offer a general overview for updating antivirus software, but if you need additional help, go to the antivirus software manufacturer website for more information.
For additional help with updating Windows Defender definitions, go to one of the documents below, depending on your operating system.
Step 2: Install antivirus software
Antivirus software has a database of information that it refers back to, when it scans a file. There it compares certain bits of code with its existing database. If it happens to trace a pattern that duplicates the database, it treats it as a virus and either quarantines or deletes it. All program files are scanned by the antivirus as it enters a system. The ones with matching signature are immediately blacklisted.
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