After much trial and error, I noticed the "Check for viruses" function, indicated on the installation Windows disks. If the antivirus can be overcome even before the operating system has loaded, it will not have to be installed from scratch along with the loss of the contents of hard drives and a lot of time. On the site of the beloved Doctor Web, I downloaded the disk image, then used Nero and burned the CD. When the image was deployed to disk, it was possible to start working with the antivirus itself. After that put in BIOS boot from the drive and pressed Start to start the scanner. When the scan was over, I selected everything that DrWeb found and removed the "enemies" from hard drive. After returning the BIOS settings and rebooting the system, I realized that the goal was achieved and it was possible to remove malicious files from startup via Start-Run-msconfig.
Alas, it is very often impossible to root out cunning viruses from a running OS, but the proposed method will certainly work with any virus threats to the Windows family.

In general, DrWeb is a completely universal product. In combination with “straight hands”, he is able to treat OSes hopelessly eaten away by viruses. There is another convenient way to remove malicious viruses without fiddling with the BIOS and burning blanks. The program Dr. Web Cure It, which does not need to be installed - just run the *.exe file. The program can be taken on the official website of the product.

Solving the problem of a virus that does not allow you to install an antivirus

So, to start fighting the virus, you need to start the OS in safe mode by holding F8 while turning it on. After Windows boot you need to run the DrWebCureIt.exe executable file and wait until the application finds malicious files. You will have to stock up on many hours of patience, but it will pay off. It is advisable to follow the progress of the search: Doctor Web will show different files and offer options for dealing with them. It is necessary to delete the found files with caution, non-specialists should consult with experienced people so as not to demolish part of the operating system. If the OS does not allow you to delete files through the antivirus, you can try sending them to the Recycle Bin manually. If, when trying to get rid of a file, a window pops up saying "file in this moment is in use and cannot be deleted!”, you need to reboot into safe mode again and repeat the procedure.

Having returned Windows to its native full mode, you need to go to the Task Manager (Ctrl-Alt-Delete) and turn off non-system processes one by one. But even here you don’t need to get inflamed and delete everything in a row, otherwise Windows may simply refuse. When the extra processes and services are cleaned out, you need to try again to delete the harmful file.
Slightly more advanced users, who tend to create checkpoints before OS problems occur, can try to restore the system to its clean state before the appearance of viruses.

The most enlightened computer owners meticulously install Windows and all their favorite applications on a clean and pre-partitioned HDD, remember the image of the system disk (using the Acronis software) and, if necessary, replace the virus-infected system disk with its original image.

Instruction

Try using Dr. Web Cure It. It does not require installation, and the system scan starts immediately after launching the exe file. Download this program by visiting http://www.freedrweb.com/cureit. Restart your computer and start the operating system in safe mode. To do this, press and hold the F8 key after starting the boot from the hard drive.

Run the downloaded exe file and wait for the program to finish scanning system files. This process can take quite a long time. Be sure to follow the process. You will be prompted to delete certain files yourself or choose another option to deal with them.

If you know exactly which files you need to delete, then try to do it yourself. If the system does not allow you to completely remove some components of the virus software, then try the "add to trash" removal method.

If, when you try to delete a file, a window appears stating that given file is busy with another process, restart the system in safe mode. If after that you could not delete the virus file, then press the key combination Ctrl, Del and Alt.

After opening the Task Manager, turn off all processes that are not system ones one by one. In no case do not disable the process if you are not sure of its purpose. This may cause the operating system to fail. Retry deleting the file after stopping unnecessary processes and services.

Try to perform a system restore procedure. Use checkpoint, which was created before the problem or the appearance of malicious files. This method will help you remove virus software if it was installed along with any program.

Sources:

• the virus does not allow you to install the antivirus

Sooner or later, all Internet users are faced with the problem of virus infection. Even an installed anti-virus program with fresh signatures cannot always help, and some malicious programs still seep into the computer.

You will need

• To cure a computer from viruses, it is convenient to use a free antivirus program Dr. Web Cure It.

Instruction

Reboot in safe. To do this, when the system boots, press the F1 key and in the menu for selecting boot options, select " Safe mode". If after booting Windows prompts you to use the System Restore utility, decline the offer.

Run "dr.Web Cure It". Select the enhanced mode of operation. In this mode, the computer will not be able to run other programs in parallel, but it will help block the possible activity of viruses.

After starting and selecting the operating mode, the program will automatically quick check. However, it is better to interrupt its execution and configure the program to perform a full computer scan. Click "Settings", "Change settings". Open the Actions tab. Uncheck "Request Confirmation". Otherwise, if a virus is found, the scan will stop until you decide what to do with the file.

In the main window, select "Full scan". Click Start. The check will take a long time, but after it is completed, you can say with a high degree of confidence that your computer is free of viruses and Trojans.

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Helpful advice

Regularly check your computer for viruses.

Tip 3: How to check your entire computer for viruses

If you suspect that your computer may have been infected with viruses, you need to perform an anti-virus scan. There comes a moment when you can see a sign on the desktop of your computer saying that your computer is infected and you will need to download a good antivirus. Inexperienced user personal computer, of course, agrees. But good antivirus does not want to treat for free and requires sending an SMS message to a specific number, which, as a rule, leads to a large amount being debited from the user's phone. How to deal with it, read on.

You will need

• Checking hard disk with specialized anti-virus programs.

Instruction

The whole problem lies in the fact that the antiviruses already installed earlier, which you did not get, cannot catch such an “infection” on the fly. You will be able to come to the aid of other free utilities designed to clean up all sorts of threats that the usual one cannot cope with. An example would be free utility by Dr.Web - Cure It! Installing and running this program will not cause you any difficulty. If there are no viruses when scanned by this product, reboot and enter the mode. Most viruses can block virus scans.

It is also possible that the virus has settled in the core of your operating system. In this case, the antivirus will not be able to find such a virus. In this case, you need to check your hard drive on another computer, which will be clean (pre-checked by antivirus).

Sometimes it is enough to use special boot disks. These disks are loaded at system startup and check the most vulnerable areas of your shell for dangerous elements. Such discs can be found in most modern antivirus manufacturers.

Related article

Sources:

• how to check for viruses on a computer

Tip 4: How to check your computer for a virus

Reliable protection PC from malware is required condition safe and quiet operation of your computer. Which method of protection to choose - that's the question. You can protect your PC in two ways: use the online service, or install an antivirus on your computer.

You will need

• In order to protect your PC from viruses, you need avast antivirus!

Instruction

Go to the developer's website www.avast.ru, fill out a very simple registration form and click on the Submit Form option.

After registration, go to your email mailbox– you will receive a notification letter with the subject avast! registration. In this letter you will see your license key for anti virus.

Return to the avast! website, go to the "Download" section and follow the link "Download avast! 4 Home Edition.

Click on the "Run" option or save the installation file to your computer - do whatever works best for you. Installing the program is very simple.

After installation, restart your computer. After that, on the screen of your monitor you will see a welcome window avast!

Enter the license key in the line. To do this, click right click click on the avast! icon, select "About avast!", click on the " License key” and paste the key that was sent to you on email address. The antivirus has started to protect your PC.

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note

When the registration key expires, you can easily get a new key and extend the operation of the antivirus for another 14 months.

Helpful advice

To check your computer for viruses and other malware, you can choose any method: full scan, express scan, removable media scan, and others.

Sources:

• Help Service, website
• How to check your computer for viruses 3 effective free methods

Nowadays computer viruses no longer cause us such inconvenience as ten years ago, for example. And even if your anti-virus software cannot recognize and cure your virus, then you certainly will not be left without a computer. According to some signs, you can independently detect the virus and seek help from a specialist.

You will need

• A computer
• Observation

Instruction

discover viruses it also helps that your computer keeps redirecting you to sites you didn't intend to visit. Or if you're getting weird results from search engines. Be sure to contact a specialist to diagnose your iron friend if you notice something like this.

The most reliable step to detect (and necessary for the subsequent treatment of viruses) is to install antivirus software. The functions of such programs directly include the search, detection and recovery of infected files. Many manufacturers offer a variety of antiviruses. And any computer user can download and install both free antivirus programs (AVG Free, Avast!, Avira AntiVir Personal and others) and, for additional reliability, paid, proven antiviruses (for example, NOD 32, Kaspersky Anti-Virus, Dr.Web etc.)

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Helpful advice

Modern hackers strive to ensure that the virus that has picked up your computer works as quietly as possible, so that you do not suspect anything and continue to use your computer as if nothing had happened. Then they can steal any passwords you enter, numbers bank cards or send spam from your email inbox.

Protecting your computer from viruses, trojans, spyware, and other malicious software is very important. Sometimes the lack of proper protection leads to the fact that valuable information, both personal and official, may be lost or stolen. If for some reason you cannot install an antivirus on your PC, use an online scanner. Let's look at how this can be done using the Panda online scanner as an example.

You will need

• You will need internet access.

Instruction

So, go to the company website and go to the online scanning section at http://www.viruslab.ru/service/check/. On this page you will see many useful information about the advantages and benefits Panda offers to its users, as well as two oblong bright blue buttons "Check PC" and "Buy protection". Today we are interested in the first button "Check PC" - click on it.

You will be taken to the page of the free online antivirus Panda ActiveScan 2.0.
What is this product? ActiveScan 2.0 is a next generation online scanner. His work is based on the principle of collective intelligence (scanning "in the clouds"). This antivirus can detect malware that traditional security solutions cannot detect.

On the online antivirus page, you will see a big green button that says "Scan". There are also several "submenu" buttons: "Quick Scan", "Full Scan", "Custom Scans". Select the type of scan you need and click on the green "Scan" button.

The program will prompt you to download the ActiveX controls component - you only need to do this for the first scan and the download procedure will take only a minute. Then click the "Scan" button again. The process will start and after a while you will be able to see the result.

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note

Panda ActiveScan 2.0 detects hidden threats: rootkits, banking trojans and malware specially designed to steal your personal data, as well as all traditional and new viruses, spyware and so on.

Helpful advice

In terms of time, "Full Scan" can take quite a long time, but for that it will be very thorough.

Sources:

• panda security

It is best to entrust the search for viruses to specially designed software - antivirus programs. Finding an antivirus on the Internet is not difficult - the virus problem is not new and very relevant, so the sellers of this kind of programs are very active. Due to the high competition, each manufacturer is ready to provide you with a free trial period, which allows you to install and scan your computer with almost any of them.

You will need

• Antivirus program

Instruction

The virus scan procedure has some differences when using different antiviruses, but there are also general methods, since all of them have to be built into the same operating system. For example, each of them places the run virus scan command in context menu Windows Explorer. To use it, launch the file by double-clicking the "My" tab on the desktop or by pressing the keyboard shortcut CTRL + E.

Then select the drives that need to be checked for viruses, and right-click on everything selected. The context menu will drop out, which will now contain the command to launch an anti-virus scan. Each manufacturer formulates it differently, but the meaning is the same for everyone. For example, if you have Avira installed, this menu bar will contain the text "Check selected files with AntiVir". Clicking it will launch antivirus utility scanning computer media. The duration of this process depends on the total number of files that the program will have to scan, as well as on the degree of detail specified in its settings for the study of all suspicious signs.

If the program detects something potentially dangerous, it will notify you about it either during operation or at the end of it, and will offer you a choice of options for dealing with the objects found. The degree of independence of the antivirus can also be configured by almost all manufacturers. Upon completion of the scan, the program will show a report, regardless of whether viruses were found.

Another common way for all antiviruses to start a scan requires opening its control panel. You can do this by double-clicking the icon of this program in the desktop tray. The control panel will necessarily contain a command to immediately start scanning the entire system. For example, in Avira, such a link with the text "Check system" is placed on the very first page of the control panel that opens. Next to it is the date of the previous full scan of the computer media.

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Sources:

• where to find the virus

Many faced the problem of uninstalling antiviruses. The old antivirus is outdated, the license key has expired, or the user simply finds new program which suits him best. In this case, the question arises of how to get rid of the antivirus installed on the computer.

Instruction

When using anti-virus software, there are usually no difficulties. In this case, the Uninstall utility is usually supplied with the software, which painlessly removes from your . If for some reason you do not have it, try using the standard Windows tools in order to get rid of the antivirus.

Go to the control panel (Start - Control Panel - Settings and Programs) and uninstall your antivirus program. Sometimes this is enough, but most often it is written much deeper on your hard drive, and when deleting in this way, a lot of "garbage" is left that can interfere in the future. normal operation computer.

Disable all services that your antivirus is running. AT command line(Start - Run) write the Services.msc command, in the window that opens, disable services that are at least a little similar to the antivirus you are trying to get rid of. They are usually located at the top of the list.

You also need to clean up the registry. To do this, write regedit on the command line and in the registry editor that opens, using the "search" function, we find and delete the remaining files of the uninstalled program (be sure to create backup registry before this action).

After that, go back to me Start, run Search, and in the field that opens, enter the name of the remote antivirus. If there are any files left, just delete them.

You can use separate antivirus removal utilities, which are created by most well-known antivirus software manufacturers for their programs. Information about these products can usually be found on the official websites of these companies, as a rule, these utilities are absolutely free.

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Sources:

• How to get rid of a virus that blocks access to some

Testing of anti-virus applications using virus programs is usually performed by developers in special laboratories. Nevertheless, the implementation of such a check is also possible at home using a specially created pseudo-virus that is not capable of harming a computer.

You will need

• - EICAR Standard Anti-Virus Test File

Instruction

Open the page in the browser http://www.virusbtn.com to enter the Virus Bulletin website.

Fill in the fields required for registration and wait for a message asking you to confirm the registration by e-mail.

Go to: www.eicar.org/anti virus test file.htm to open the page of The European Institute for Computer Antivirus Research and download the test virus created by the company's specialists. This pseudo-virus does not contain program code and cannot harm your computer, but is defined as a malicious application by the vast majority of antivirus programs. In fact, it is a perfectly valid DOS program that will result in the message
Eicar-Standard-Antivirus-Test-File!

Keep in mind that the results of test studies of the effectiveness of antivirus programs can differ quite a lot from the accepted classification. For example, the top ten antiviruses of 2011 are as follows: - Shield Deluxe 2011;
- Trend Micro Titanium Antivirus 2011;
- Norton Antivirus 2011;
- Panda Antivirus Pro 2011;
- ZoneAlarm Anti-Virus 2010;
- ESET NOD32 Antivirus;
- Kaspersky Anti-Virus 2011;
- Zone Alarm;
- McAfee Antivirus Plus 2011;
- Computer Associates Antivirus 2011.

Compare the above list with the top 7 free antivirus apps of 2011:- Avast Free antivirus;
- Avira AntiVir Personal Free Antivirus;
- AVG Anti-Virus Free Edition 2011;
- Microsoft Security Essentials 1.0;
- Panda Cloud Antivirus 1.0;
-Comodo internet security Premium 5.0;
- PC tools Antivirus Free edition.

Related videos

Sources:

• Intended use EICAR

operating room Windows system, with all its undoubted advantages, has one significant drawback. Namely, it is vulnerable to viruses and Trojans. And although antiviruses and firewalls significantly reduce the risk of infection, the user is sometimes faced with the need to find a virus that has settled on his computer.

Instruction

All destructive programs can be divided into two types. Some of them declare themselves very clearly: for example, they destroy information, display various messages on the screen, and cause malfunctions in the computer. Others, usually Trojans, try to hide their presence.

Having met the presence of programs of the first type, try to find the program file and the autorun key. Open Task Manager (Ctrl+Alt+Del) and look for processes with suspicious names that are not specific to your system. If there is one, write down its name, then “kill” the process by selecting it with the mouse and clicking the “End Process” button.

If the process was able to complete and the problems with the computer disappeared - which indicates that you completed the process of the destructive program - open the registry editor. To do this, click: "Start - Run" and enter the command regedit, then click "OK". The Registry Editor window will appear. Open the search: "Edit - Find" and enter the name of the completed process without the extension. Delete all autorun keys found.

If a virus or hides its presence in the Task Manager, use the Spyware Process Detector program, it can be found on the Internet. It allows you to discover processes hidden programs and complete them. With it, you can also remove autorun keys from system registry.

Open Command Prompt: Start - All Programs - Accessories - Command Prompt. Type the netstat –aon command, press Enter. You will see a list of active network connections. In the column "Local address" you will see the open ones that are currently in use. The Status column will display the status of these ports.

The ESTABLISHED value indicates that the Internet connection is currently established on this port. The LISTENING state indicates that the port is open, the program using it is waiting for a connection. Such a program can be a backdoor - a program that allows you to control your computer.

Remember the PID (identifier) ​​of this program, it is indicated in the last column. Type tasklist in the command line, you will see a list of processes. In the PID column, find the desired ID and see which process it corresponds to. You can immediately "kill" this process with the taskkill /pid 1234 command, where instead of "1234" you specify the PID of the process to be terminated.

Ports 135 and 445 in Windows are open by the operating system itself. It is recommended to close them with the "wwdc.exe" utility. Always be aware of what programs are opening ports on your computer. Do not work without a firewall. Always enable display of file extensions. Update anti-virus databases in a timely manner.

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Even if it seems that there are no viruses on the computer, this does not mean that the system is clean and free of malicious code. Most programs harmful to the computer do not manifest themselves until certain conditions are met. Therefore, from time to time it is necessary to run a disk scan for viruses, even if at first glance it seems that they are absent in the system.

Instruction

Download an antivirus program. There is a huge selection of antivirus software, and therefore, when choosing a particular utility, be guided by the goals and user reviews, the frequency of updates and the number of viruses that are included in the database. The more updates, the more more likely that the program is capable of handling malware and it completely protects the system from the penetration of even the newest viruses.

What does the message "You will not be able to receive the latest virus signature updates" mean?

* If you receive a red notification, you will not receive new updates and will not be protected from new threats.

Keeping ESET NOD32 Antivirus up to date is essential to keep your computer as secure as possible. Keeping the virus signature database and program components up to date is an essential part of fully protecting your computer from malicious code.

Compare your version of ESET NOD32 Antivirus

You are using the following version of ESET NOD32 Antivirus: .

ESET is constantly developing advanced protection methods

For detailed information about what's new, see the ESET Advanced Technologies page on the ESET website.

If you are unable to update or if ESET NOD32 Antivirus shows a 'red' status after updating, please visit our Troubleshooting Knowledge Base article:

• Update fails after receiving "A free update available" or "Your software is out of date" message

One of the popular antivirus products ESET NOD32 guarantees good protection. But some users may encounter the problem of updating the virus databases that are responsible for detecting malware. software. Therefore, this problem should be solved as soon as possible.

There are several reasons for the error and its solution. The following are the most common problems and how to fix them.

Maybe your bases are damaged. In this case, you need to delete them and download again.

Method 2: Troubleshoot license issues

Perhaps your license has expired and you need to renew or buy it.

If everything is in order with the license, then check the correctness of the entered account data.

Method 3: Resolve Server Connection Error

If you have no problems with the settings, then check the stability of the Internet connection.

Method 4: Reinstalling the antivirus

If none of these tips helped, then try reinstalling your antivirus.

Here were listed the most common errors and their solutions in ESET NOD32. As you can see, eliminating them is not difficult at all.

To resolve this error, follow these steps:

Solution 1 – Clear Update Cache:

1. Open the antivirus window and go to advanced settings (F5 key on the keyboard).
2. Uncheck the box next to "Enable Self-defense". ESET will warn you that a computer restart is required. Click OK.
3. In the advanced options tree, open the Update section. Clear the update cache by clicking the Clear button.
4. Click OK and restart your computer.
5. Open antivirus - update and click the "Update virus signature database" button.
6. If you are still getting the "Error downloading update files" message, go to Solution 2. If not, turn Self-defense back on. Press F5 key to open settings window, and then select Enable Self-defense . ESET will warn you that a computer restart is required. Click OK. Click OK to exit the window Additional settings. Restart your computer.

Solution 2 - Remove update files:

1. Check what you can see hidden files and folders.
   Click the Start button - Control Panel - Folder Options or Folder Options - On the View tab, select "Show hidden files and folders" - click OK.
2. You need to delete the contents of the Updfiles folder:
   -Windows users XP: Click Start - My Computer and navigate to C:\Documents and Settings\All Users\Applications Data\ESET\ESET smart security or ESET NOD32 Antivirus Updfiles and delete the contents. Then, go to C:\Documents and Settings\All Users\Application Data\ESET\ESET Smart Security or ESET NOD32 Antivirus Charon and delete its contents.
-Users Windows Vista and Windows 7: Click Start - Computer and navigate to C:\ProgramData\ESET\ESET Smart Security or ESET NOD32 Antivirus Updfiles and delete its contents. Then, go to C:\ProgramData\ESET\ESET Smart Security or ESET NOD32 Antivirus Charon and delete its content.
3. Go to C:\Program Files\ESET\ESET NOD32 Antivirus or C:\Program Files\ESET\ESET Smart Security and delete all files that look like em0**_32.dat.
4. Restart your computer.
5. Open antivirus - update and click the "Update virus signature database" button. If the database has been updated, you can enable Self-defense again. Press the F5 key to open the window advanced settings, and then select Enable Self-defense. ESET will warn you that a computer restart is required. Click OK. Click OK to exit the Advanced Setup window. Restart your computer.

If the steps above do not solve the problem, please uninstall and reinstall ESET.