Instructions
The presence of the virus can be primarily indicated by obvious signs. For example, messages pop up on the screen or unsolicited Internet pages open. You can encounter obvious manifestations of the presence of a virus if a Trojan program has settled on your computer.
In addition, you can guess that a PC is infected by hidden signs. That is, viruses themselves are inconspicuous, but you can find out about their presence if you look in the registry.
In addition, there are indirect signs of the presence of malicious software. This category of “symptoms” includes sudden freezing of a running program, the appearance of an unknown error message on the screen, and other manifestations.
To find a virus without an antivirus, press the key combination Shift+Ctrl+Esc or Alt+Ctrl+Delete: the task manager will open on the screen (it has four columns). Look at the contents of the first column - “Review name”: here you will see information about ongoing suspicious or non-suspicious processes. Each PC user has a different set of basic processes, so make sure that there are no questionable additional operations.
Viruses often get into startup. To find startup files, open the Start menu, then click on the All Programs tab and select Startup. You can also find malware using CCleaner or Auslogics software.
Open the system utility msconfig.exe: to do this, click “Start”, then click on the “Run” tab, and then write the name of the application to open. There is also a “Services” tab, which contains those system components that start when you turn on your personal computer. This list may also contain malware.
note
Viruses are no joke: be sure to install an antivirus.
Helpful advice
Before deleting a file, make sure that it is truly questionable.
Related article
Sources:
- Signs of a computer virus infection
- how to remove a virus without an antivirus
Are you familiar with the blue window blocking the entire screen asking you to send an SMS to unlock your computer? And the painful work on the Internet, when you don’t download anything, and the traffic counter is shaking up megabytes of some data? Or maybe the exe files stop running one after another? If yes, you need to eliminate the virus urgently!
Instructions
If even the folder cannot be deleted, try changing one of its names. Right-click the folder icon and select "Rename" from the context menu, then enter the new modified name. After that, try deleting the folder again.
If you have performed the operations described above, but the folder is not deleted, use the free Unlocker utility. This program allows you to process files and folders that are blocked for the user. After installing Unlocker, right-click on the folder you want to delete and select “Unlocker”. In the program dialog you will see a list of system processes that prevent the folder from being deleted. End these processes and then delete the file.
Unlocker is capable of deleting files and folders that are used by another application, as well as access to which is blocked or denied. Unlocker also works in cases where the disk is full or write-protected, when a file is being used by another program, and when directory sharing is broken.
A computer virus is a program that harms a computer. It can perform various actions without the user's permission. Including blocking the operation of a particular program or the entire operating system. You need to get rid of viruses as quickly as possible.
You will need
- -antivirus;
- - free healing utilities;
- - procexp program;
- -LiveCD;
- -hard drive with the OS installed.
Instructions
If it does not block work with the computer, run the installed antivirus. Set to scan all hard drives. Including removable or . If a virus is found, the program will offer to cure it, quarantine it, or delete it. If you are sure that you have not installed such a program on your computer, select the uninstall option.
There you will see the hosts file. Open it with notepad. Delete everything after the line 127.0.0.1 localhost. Save your changes. Then restart your computer. The virus will be removed. After that, just in case, check your computer with any antivirus.
If there is a banner in the middle of your desktop that is preventing you from working, you need to log into your computer in safe mode. Then run any antivirus or healing utility. Remove any viruses found and start your computer as normal.
If the banner does not cover the entire desktop, you can delete it manually. Install the procexp program. Launch it. Move it so that all running processes are visible. Find the virus. As a rule, it stands out in bright color. Find the folder where it is located.
Go to this folder. Make all invisible folders visible. Remove the virus and empty the trash. This option is only suitable for normal loading of the operating system. If you are logged into safe mode, the virus will be inactive. And, accordingly, you will not see him.
If it is not possible to perform any action, you need to start the operating system from another disk. Start the OS from the LiveCD. Run a full virus scan with an antivirus or cleaning utility. Remove the virus.
Connect another hard drive with the operating system installed. Launch the OS from it. Scan all hard drives using an antivirus or cleaning utility. Remove the virus.
Video on the topic
note
As soon as you realize that there is a virus on your computer, disconnect it from the local network, if there is one.
Helpful advice
Do not stop the antivirus until a full scan of all disks is completed.
Sources:
- How to get rid of viruses without antivirus programs
If you have been using your computer for a very long time without an antivirus program, but then still decide to install an antivirus, there is a high probability that the computer already has viruses that need to be removed. Even if you have an antivirus program installed, from time to time you need to scan your system for viruses and, if found, remove them. The absence of viruses on your computer makes the system stable and guarantees the safety of your personal files.
You will need
- Personal computer, antivirus program ESET NOD32
Instructions
Further instructions for removing viruses will be given using the ESET NOD32 antivirus program as an example. You can download this antivirus from the official website of ESET. A completely free trivial version is available with a free trial period of one month.
After installing NOD32, the program icon will appear on the operating system taskbar. You need to enter the program menu. To do this, double-click on the program icon. In the menu that appears, select the “PC Scan” component, and in the next window, select the “Custom Scan” option.
Next you need to select the objects to scan. As scan targets, mark all hard drive partitions, RAM, and even computer virtual drives (if any). Now pay attention to the windows: “Scanning profile”. There is an arrow nearby. Click on it. A list of scan profiles will open. Select Deep Scan. Once all the computer scan options have been set, click “Scan”.
Wait for the scanning operation to complete. A log will then open containing the scan results. There will be a list of viruses found. Opposite the type of virus there will be an arrow, clicking on which will open a list of possible actions. From the list of actions, select "Delete". Then click “Run” at the bottom of the window. After this it will be removed from the computer. In this way you can remove all viruses found by the program.
If among the infected files there was a file that is necessary for the normal operation of the operating system, you will not be able to delete it. After you select the “Delete” action, a message will appear: “Deletion is not possible.” The virus will be quarantined and isolated. While in quarantine, it will not spread and infect other files.
Video on the topic
Viruses and malware block the full operation of your personal computer. To protect your PC, you need to use an antivirus. But if you don’t have an antivirus, you can cope without it.
Instructions
If the Winlock virus program has entered the operating system of your personal computer, then you can deal with it without resorting to the help of anti-virus software. Use your computer's System Restore feature. If the Start menu is available, then open “Start” - “All Programs” - “Accessories” and select “System Restore”. Specify the “rollback” point (this mark is set automatically with a certain period, but you can set it yourself) and click “Next”. The process of “rolling back” the system for a specified period of time will begin.
After this operation, the virus will be removed from your computer.
If a virus has blocked the desktop of your personal computer, you can run “System Restore” via the command line. Press the hotkeys Ctrl+Alt+Delete to open the Task Manager. In the dialog box that appears, click the link “File” - “New task (Run...)”. Enter the command “cmd.exe”. A command prompt window will appear. Now you need to enter the following: %systemroot%system32
estore
strui.exу and press “Enter”. Automatic system recovery will begin.
We all know that computer viruses can cause problems of all sizes. Some malicious files are capable of copying themselves until there is no free space left on the hard drive, while others damage data and interfere with the normal operation of the computer. Some viruses may even try to hack your email in an attempt to spread malware further. There are also so-called “crackers” that use viruses to gain remote access to your computer.
Nobody wants to “pick up” some nasty virus on their computer. In most cases, this can be avoided by using your computer carefully, installing reliable antivirus software, and keeping it up to date.
But sometimes viruses still find loopholes in protection. This can happen if your antivirus software is out of date, or if you accidentally click on a link with a virus, or if someone else was using the computer and accidentally downloaded infected files.
But how can you detect a virus on your computer? If you have the most modern antivirus software installed, which is updated on time, then when a virus is detected, it should display an appropriate warning. But what if your antivirus software is outdated or disabled by a virus? There are several signs to detect the virus.
Signs of a computer virus infection
Computer viruses come in a variety of forms: from those that simply get on your nerves to those that are extremely dangerous.
Frequent shutdowns of your computer may indicate some kind of problem. Some viruses penetrate the most important files that keep your computer running. If an app turns off or displays an error message when you open it, this could be a sign that your data is being compromised. This is how malware can operate.
Maybe your computer is running much slower than before? If you are not using applications that require a lot of processing power, then it is quite possible that the cause is malware.
Another sign of trouble is frequent messages indicating that you cannot access one of your local drives. Also, a sign of a virus may be applications and files that are not working correctly or not opening at all, as well as hardware (a printer, for example) that does not respond to your commands. Although none of these signs can be used to say with an absolute guarantee that your computer is infected with a virus, such signs still signal that something is wrong with your computer.
If you notice changes in file sizes even though you haven't used them recently, this could also be a sign of infection. Finally, if you see strange messages or images on your screen, then you could also be the victim of a hacker attack.
It is important to remember that most often it is computer viruses that cause such troubles, but not only viruses can cause them. If you do find that your computer is infected with a virus, the main thing is not to panic.
False Alerts
When you open pages on the Internet, you may see pop-up messages on your screen warning you that a virus has been detected on your computer and that you just need to download antivirus software to get rid of this virus. In this case, be extremely careful! Such messages are most often created by scammers who are trying to gain access to your computer or damage any files. Trust only the messages that your antivirus program displays to you.
Do you think you can only find a virus and get rid of it with an antivirus? But no, no. Now I will describe to you how you can get rid of it with straight hands. We will use the program to search for files using various parameters.
First you need to understand what a virus is.
Virus is an executable file. Those. it has an exe or dll (very rare). If you think logically, such files are not created randomly while working on a computer. Of course, unless you downloaded the program installation file from the Internet or copied something with that extension. But you know and remember this, and viruses work on the sly.
All that remains is to find it. A free portable utility will help you with this. SearchMyFiles. We will not use it for its direct meaning, but only use its ability to search by date and time.
By the way, the main features of the program are searching by templates, time of creation/modification/access (created/modified/accessed), attributes, sizes, contained text or binary fragments, and others. The results can be saved to a file in text/html/csv/xml format.
To start the link:
Initially, the search window looks like this:
After installing the Russian language (just unpack it into the program folder), it changes:
I think many have already guessed what needs to be done here. If not, look at the screenshot:
So:
- indicate the folders where you should search (usually the entire system disk).
- specify the mask for files (*.exe;*.dll).
- indicate the time of the file. If you know the time when the virus was discovered, you can indicate it. There are many different parameters there. I recommend specifying either Yesterday, or specify the interval from which to which date. You can specify both access and creation.
This method is suitable for more experienced and advanced users who know the file names.
This method of searching for viruses is also good because it does not depend on the relevance of the antivirus database.
Well, if you consider that this program does not require installation, then you can imagine how useful it is.
For example, your computer was blocked by SMS ransomware or a windows blocker. Are you loading from
Friends, in this article you will learn how a computer will behave when infected with a virus, and how to carry out treatment using system recovery.
Today, the variety of computer viruses on the Internet is amazing, but the creators of antiviruses are also not asleep - they do not allow us to carry out the maximum attack on our iron brainchildren.
Signs of a computer infection
Unfortunately, antiviruses are not perfect and there are times when a virus creeps onto a computer, which is what we’ll talk about today.
First of all, we pay attention to the behavior of the computer. The following signals may indicate that your computer is infected with a virus.
- Programs start without your intervention.
- The computer produces unexpected beeps.
- Friends argue when they receive letters from you with viruses.
- If you yourself often receive mail without a return address.
- The computer slows down and often freezes.
- Programs freeze and close randomly.
- Windows takes a very long time to load or does not load at all.
- In the Task Manager, on the Processes tab, you see csrcs.exe? This is a Trojan program, just don’t confuse it with a system process, the difference is just one letter csrss.
- The browser loses half of its manual control - it opens pages on its own, is glitchy, and behaves inappropriately.
Treatment methods
If you notice that the computer behaves as described above, then do the following:
First of all, we scan the system with the installed antivirus. If the virus cannot be detected, we try other antiviruses: Avast, Kaspersky or Nod32.
Video about viruses
How to remove a virus using system restore
If the antivirus was unable to detect or remove the virus, we try to restore the system. Restart the computer and press the F8 key. In the boot options window, select Boot in Safe Mode.
You can run System Restore in an alternative way. In the window with system boot options, select boot in safe mode with command line support. After loading, enter in the command line and press Enter:
- for Windows 7 or Vista: %systemroot%\system32\rstrui.exe;
- for Windows XP: %systemroot%\system32\restore\rstrui.exe.
After launch, follow all the instructions of the program for successful recovery. If this does not help, it will be easier to reinstall Windows.
How to detect and remove a virus from a computer in video
Hello everyone Do you think you have a virus? Or do you want to somehow check whether it is there or not? Honestly, I don’t know what to tell you here, the fact is that there is no such program to simply check whether there are viruses or not. You can really do it differently, you can download an anti-virus utility and scan your computer, but if there are viruses, do not remove them. Here you will get what you wanted, that is, you will find out whether there are viruses on your computer or not. But I think that you agree with me that this is some kind of stupid nonsense, well, such a check, without removing the viruses themselves, in case they are found.. In short, nonsense, don’t you agree?
But are there any symptoms, so to speak, that there is a virus living on the computer? Well, what can I tell you, on the one hand there are, on the other hand they may not exist at all.. The fact is that earlier viruses could play around, do some nonsense, play mischief, so to speak.. But today they are already smarter and they are programmed, so to speak, to work covertly, that is, to make them impossible to notice.
But there are also viruses that are noticeable, so guys, here is a list of common signs by which you can understand that you have a virus:
- your computer or laptop behaves strangely, sometimes it can regularly freeze or slow down, but there are no apparent reasons for this, that is, sometimes the computer works normally, sometimes it’s strange;
- you are sitting in a browser, watching the Internet, but advertising is not quite the same as it was before; There may also be advertising where it has never existed before, for example search engines, they have their own branded advertising, so to speak, and there should not be any left-handed advertising;
- the advertising is not entirely standard, that is, you can notice that most of the advertising is in a foreign language, this means that the virus shows foreign advertising, because the virus itself is from there and, in principle, it was not made for Russian-speaking users, well, something like this;
- after loading Windows, something else happens, that is, the disk rustles, something is happening there, although there is no reason for this;
- sometimes or regularly the mouse changes its icon to a waiting icon, that is, as if some action is being performed and its completion is expected; in most cases, this is a sure sign that something is wrong with the computer and most likely there is a virus;
- antivirus sites are blocked, you cannot download any antivirus or antivirus utility; if you notice this, then alas, it is also very, very similar to a virus;
- for some reason you can’t log into your email or VKontakte or another social network; at the same time, you did not change the password, that is, it is not clear why, but you cannot log in; in this case, the phone is no longer suitable for restoration, well, this is in case it was tied; or vice versa, the phone works and you can restore access, but then the situation may repeat itself; this all suggests that either you have a virus or an attempt was made to extract your password in a fraudulent way, so to speak, for example, using phishing;
- files do not open, that is, for example, you have music, that is, music files and so you try to open them, but there is exactly zero response, this is also a sign of a virus;
- pop-up messages on the computer itself, usually a small window appears and there is an incomprehensible advertisement in it; it is precisely this window that the viral process is responsible for;
- malfunctions in the operation of programs, for example, your browser opens as if you had just installed it;
- you cannot save the file in the browser, that is, you try to save, but there is zero response, or vice versa, the save dialog pops up, but then nothing downloads; I had this happen and to be honest, I still didn’t understand whether it was a virus or not, because then I went and cleaned Windows with an anti-virus utility, after which everything was normal;
These are, so to speak, approximate signs that you have either a virus on your computer or a program with viral behavior. What is also interesting is that not all antivirus programs with viral behavior are classified as dangerous. Often such programs live in peace, and you don’t even suspect that they only slow down the work of the computer, and such programs can also download other programs, also viral, so to speak, colleagues in the shop.
What to do in this case? I’ll be honest, believe it or not, the best thing is not to look for viruses yourself, not to remove any suspicious programs, but just use two programs, these are AdwCleaner and Dr.Web CureIt!, these are free and the best Virus scanning tools. I’ll tell you about them today, I think that everything will be clear to you and you will know how to clean your computer from viruses
So guys, I will show everything in Windows 7, but for other Windows everything is similar. Let's start with AdwCleaner, you can download this utility here:
There you click on download and that’s it, then you launch it, there you will also need to click I agree, well, this is like a license agreement. And that’s it, then the program will start, you won’t even need to install it, look how it looks:
Oh, I completely forgot to write something about why the AdwCleaner utility is needed! This utility is needed to search for viral programs, that is, not full-fledged viruses, but programs that only harm the computer, such programs are also called advertising viruses. In general, I advise you to scan your computer with the AdwCleaner utility, which means clicking on the Scan button in the window and waiting for the scan to finish. During the scan, everything possible will be checked, including browser extensions, there may easily be virus extensions, all system folders, services, registry, browser shortcuts, scheduled tasks will also be checked, in general, everything that is needed will be checked, believe me. The check itself is very thorough. Then, when the AdwCleaner utility checks everything, you will need to click the Clean button so that all virus debris is removed (before that, you can look in the tabs to see what was found and where, if you are interested, of course):
Then a message will appear saying that the AdwCleaner utility will close all programs itself, so save everything that may be lost when closing the program. In short, you better close all the programs you can and then click OK in this message:
Then the removal of viral debris will begin. By the way, it’s funny, but not a lot of viral garbage was found, but not very little either. Do you know what is most interesting about this? I have Avast on my computer.. But he didn’t notice anything like that... That’s a joke.. Well, in short, then a message will appear, it is just informative in nature, but I advise you to read everything that is written there, it will still be useful info for you:
Well, then there will be another message, this is about the fact that a reboot will be done (without it there is no way):
After the reboot, a report will open in which it will be written what was done, that is, what was deleted, what folders and files were there, in short, you can read it in principle, here is the report that opened for me:
Well, we’ve done the first part, we checked the computer with the AdwCleaner utility, now it’s time to check the computer with the Dr.Web CureIt! utility, which is already aimed at searching for serious viruses, like Trojans, worms and all that. This means the Dr.Web CureIt! you can download it from here:
There you click Download for free, there’s nothing complicated
By the way, what I also really like is that the Dr.Web CureIt! will download with a random name, this is specifically so that viruses do not understand that you are downloading an anti-virus utility! Yes, such viruses exist and this is not a joke! For example, I downloaded the utility with this name:
So, we downloaded the utility, run it, this window will appear, this is Windows security, then click Run (you may not have this window at all):
Then a window will appear, there you will need to check the box that you are taking part in the quality improvement program, without this you will not be able to click on the Continue button:
And only then you can scan your computer for viruses; all you have to do is click the Start scan button:
The search for viruses will begin:
There will be a small sign at the bottom, viruses will be indicated there, of course, if they are found. The scan itself may take some time, since all files, all folders are checked, in general, the more files you have on your hard drive, the longer the scan will take. If you have not a regular hard drive, but an SSD, then the check should be an order of magnitude faster. Now the check is over, I found some viruses and virus programs, here they are, look:
In general, I click the Defuse button and the process of removing all this virus begins:
Well, look, please, the utility worked just fine and that’s it, look for yourself, everything that was found was all deleted:
Well guys, what are your thoughts? It seems to me that the Dr.Web CureIt utility worked superbly! and I think that you agree with me! Then, when you close the Dr.Web CureIt! window, it will be written that in order to complete the job, you need to reboot:
Do you know that? Don’t put off this reboot, but do it better right away! Before rebooting, save all the data, close the documents, programs, so that you don’t lose anything, maybe you were doing something on the computer, save this, and then click the Restart now button
I have to write something else important. After a reboot, your computer may load a little slower, this will happen once and it seems to me that this is somehow connected with Dr.Web CureIt!, then when I rebooted again, everything was normal!
As I already wrote, it may be that you will not be able to download anti-virus utilities. This is, so to speak, a very rare and unpleasant bummer, and you know what? Guys, I had it, but it was a long time ago! What should be done in such cases? Well, here I will say this, you need to check your computer in any way, try downloading the utility from a friend on a flash drive, and then run the utility on your computer. Yes, this is still a hassle, but you can also try to look for some utilities that you can still download! In such cases, it’s very good to turn to the security forum, the guys there often help in any way they can..
Well guys, it’s time to summarize a little, so to speak. What did we do, what did I write to you about here? I told you about two utilities that allow you to find out whether there are viruses on your computer or not, and of course, if there are any, then it is better to remove them; the utilities can do this too. These two utilities are really effective tools against almost all viruses and advertising nonsense. I highly recommend using these utilities; if you have a desire, you can also look at the HitmanPro utility, I wrote about it here:
Well, guys, that’s all, I hope that everything was clear to you here, and if something is wrong, then I’m sorry. Good luck in life and may everything go well for you
24.12.2016
