Quickly diagnose laptop problems. How to check a laptop yourself? How to check a computer or a separate file for viruses online Programs to check functionality

Greetings, dear blog visitors. Dmitry Smirnov is in touch with you as always, and in this article I want to tell you about how to check your computer for viruses quickly and freely, simply and affordably! In the last article I wrote about that, and now I’ll tell you about viruses!

How to check your computer for viruses

Using your favorite computer, after a certain period of time, you began to notice that the boot process began to occur more slowly, programs open and run with greater delay, or some of them stopped functioning, produce errors, and sometimes it seems that the system itself produces some - visible actions not ordered by the user.

It's time to check your computer for viruses online. And what exactly will we check for? There may be several main options:

Checking your machine's system disks;
Checking system files for viruses and malware;
Checking for the presence of unnecessary and unused files, programs, the contents of Internet browser folders, temporary file storage folders, etc.;
Checking the compatibility of some programs to work together.

This list, of course, is not exhaustive, but it lists, perhaps, all the main types of system checks available to the average user. We will not take into account users at the level of professional programmers, hackers, etc.

When we think about verification, we assume that we need special, complex and expensive programs to carry out this process. Agree, I don’t really want to spend time searching and money buying all sorts of incomprehensible software, if it’s not at all clear what to check. I would like to note that an important feature of paid licensed software is the possibility of its regular updating, all kinds of support from developers and the uninterrupted operation of its work and the presence of a large arsenal of various “fine settings”.

Free software cannot always boast of this, but there are quite worthy examples among it. Let's consider them.

A simple standard program contained in all the latest versions of the Microsoft Windows environment will help you check your system drives for free.
- Click Start, select Computer, a window appears indicating the drives. Place the cursor over the desired disk and press the right mouse button once. In the menu that opens, find properties and click.

In the same window, on the General tab, you can set disk cleanup and select categories of files that can be deleted as a result of the program. Do this with caution.

On the service tab, find the Run check button and click it.

By clicking Start, we force the system to start checking the selected disk. As a result of such a check, all system errors will be corrected and damaged disk sectors will be checked and restored (if you check both boxes). The system may ask you to start scanning the next time you boot. This may take a few minutes, depending on the size and condition of your drive. This repair program can be scheduled to run on all drives in the system at once. Then when loading they will be checked in order of priority.

There are a lot of well-known and well-proven free versions of anti-virus programs and healing utilities that will analyze the system or specified individual parts of it for the presence of viruses, Trojans, worms and other “pests” of the system. Here are some of these programs.
- Avast Free antivirus solution, which is successfully used by about 230 million people on Earth. You can download the program for free from the Russian-language website https://www.avast.ru/index. Of course, there are paid advanced packages of this antivirus, but we will talk about its free version.

The developers will ask you to go through simple procedures.

The program allows you to scan with a choice of parameters (viruses, outdated software, network threats, allows you to analyze system performance and suggest ways to optimize it. Of course, Avast Free will not save you from cutting-edge and complex viruses and malicious code, but for the average Internet user it is quite will suit you and you will like the ease of loading, interface, good and high-quality work.

For example, intelligent scanning has been launched.

And here are the results of this scan. You can eliminate everything in one fell swoop by clicking on the appropriate button.

2.6. Another excellent option for checking your system for viruses and malware is the free healing utility from Dr. Web – Cureit, available at http://free.drweb.ru/cureit.

2.7 Download this program, install and configure. It checks the folders and drives selected by the user for the presence of harmful “inhabitants” of the Internet. She will suggest actions with them (Quarantine-Cure-Delete). The distribution package of the program increases with each release and is already about 200 MB.

A feature of versions released in the last 2-3 years is that the program does not block the operation of the system during testing and allows you to download other applications and programs.

3.1. The Total Commander program will allow you to check for the presence of unnecessary and unused files, programs, the contents of Internet browser folders, temporary file storage folders, etc.;

This solution allows you to:

Edit the list of startup programs;
Remove installed programs;
Clean the program registry;
Clean system disks;
Clean shortcuts that have not been launched by the user for a long time.

3.2. For example, let's run Registry Cleaner.

There are other similar packages of treatment and testing utilities that allow you to “clean” the system, delete unnecessary and faulty files, “fine-tune the system,” etc. (eg Ace Utilities, Norton Utilities). But you need to use them with great caution, understanding exactly what you are going to delete and how this may affect the operation of the system.

There is a class of programs that allow you to understand the compatibility of various software installed on your computer. Here we will not consider such programs due to their complexity and the ambiguity of their results.

You can limit yourself to only a few rules so that your system does not become inoperable after installing the next program:

If possible, do not install many programs of the same type of work on the disk (many cleaning programs, etc.);
Do not install several antiviruses together on the disks of one machine (they most often perceive each other as macro viruses and can block the operation of the system. Then you will need to start in safe mode and remove one of them;
Do not install unverified, dubious programs.

Study the computer and its components, informatization is the future. It is the key to success in many industries. And now you know how to check your computer for viruses free and easy!

Everyone wants to be confident in their computer and hope that it is free of various viruses, Trojans or banal surveillance.

Today I will try to help you dispel your guesses and show you how to independently check your computer for malware and, if detected, immediately neutralize it. Let's fight for computer cleanliness together.

Introduction

Usually, users remember about antivirus programs only after they have picked up something interesting on their computer. In most cases, panic begins and measures taken during this panic can only worsen the current situation.

What you need to know before trying to remove a virus

I will immediately explain why. The main problem is that having caught a virus, a person “runs” to the search and enters the query - “How to remove a virus from a computer?” It seems that the idea is correct, immediately find information on how to properly remove malware and immediately repeat all this on your computer.

On the one hand, it seems that it simply cannot be simpler, but as a result of following many instructions, nothing helps or gets even worse. The fact is that this situation also has a “second side”, which for some reason users ignore citing emotions, panic and the desire to remove the virus faster.

What is really happening at this moment? And the problem is that while browsing the sites you download programs that you know little about and download from the unknown site “Vasya Pupkina”, and then, in the evening, you start writing on all the forums that the programs you were told about simply suck and are themselves viruses . You even start advising that no one should download it, it’s all a scam. Have you tried turning on your brain? After all, besides how to download an antivirus utility, hundreds of thousands of articles warn you that you can only download from the official website, and everything else is unreliable.

You yourself, under the guise of anti-virus software, download harmful programs as ballast and there is no need to say after that that everyone is to blame except you. Why am I saying all this, I’m a little heated by the current situation and so I’ll now tell you about three good anti-virus scanners that you can use absolutely free.

I will definitely give you download links exclusively from official sites - this is the key to success, because not one normal company would promote its product with viruses to its detriment. Therefore, we read, download and no longer torment ourselves with the question of how to remove a virus from a computer.

Learn how to efficiently scan for viruses on your computer

I’ll say right away that all the utilities that I’ll write about now are not intended to be installed for permanent protection of your computer; they should be used exclusively to remove viruses that you have already picked up.

Therefore, after thoroughly cleaning your computer from harmful software, do not forget to install an antivirus for constant protection.

Okay, let's get down to business, I'll show you 3 good anti-virus scanners, and you don't choose from them, but download all three in a comprehensive manner and scan your computer with each program in turn. Why ask? Yes, because there is no perfect protection and the more options you use, the more reliable the result you will get. 3 scans should be enough to thoroughly check your computer for viruses

Now a little more about each scanner.

Dr.Web CureIt scanner

Malwarebytes Scanner

Appearance at the time of writing

After using these programs, you will be able to neutralize most known infections and thereby protect your computer. . But I warn you, it is merciless and if you are negligent, you can “kill” the entire operating system along with viruses. Now it’s time to relax a little and consolidate your knowledge with practical examples.

Watch video: How to check your computer for viruses for free?

I will close the topic here, but I hope to hear your opinion on this issue. Tell us what you use to remove viruses?

During operation of the operating system, installation and removal of various software, various errors are generated on the computer. There is no program that would solve all the problems that arise, but if you use several of them, you can normalize, optimize and speed up your PC. In this article we will look at a list of representatives designed to find and fix errors on your computer.

The name of the program FixWin 10 already suggests that it is suitable only for owners of the Windows 10 operating system. The main task of this software is to correct various errors related to the operation of the Internet, "Conductor", various connected devices and the Microsoft Store. The user only needs to find his problem in the list and click on the button "Fix". After restarting the computer, the problem should be resolved.

The developers provide descriptions for each fix and explain how they work. The only negative is the lack of Russian interface language, so some items may be difficult to understand for inexperienced users. In our review at the link below you will find a translation of the tools if you decide to choose this particular utility. FixWin 10 does not require pre-installation, does not load the system and is available for download for free.

System Mechanic

System Mechanic allows you to optimize your computer by removing all unnecessary files and cleaning the operating system. The program contains two types of full scans that check the entire OS, as well as separate tools for checking the browser and registry. In addition, there is a function to completely remove programs along with residual files.

There are several versions of System Mechanic, each of them is distributed at a different price, respectively, the tools in them are also different. For example, the free version does not have a built-in antivirus and the developers urge you to update the version or purchase it separately for complete computer security.

Victoria

If you need to carry out a complete analysis and correction of hard drive errors, then you cannot do without additional software. Victoria software is ideal for this task. Its functionality includes: basic device analysis, S.M.A.R.T drive data, read check and complete erasure of information.

Unfortunately, Victoria does not have a Russian interface language and is itself complex, which can cause a number of difficulties for inexperienced users. The program is distributed free of charge and available for download on the official website, but its support ended in 2008, so it is not compatible with new 64-bit operating systems.

Advanced System Care

If after some time the system starts to work slower, it means that unnecessary entries have appeared in the registry, temporary files have accumulated, or unnecessary applications are being launched. Advanced SystemCare will help correct the situation. She will scan, find all the problems present and fix them.

The functionality of the program includes: searching for registry errors, junk files, fixing Internet and privacy problems, and analyzing the system for malware. Once the scan is complete, the user will be notified of any problems and they will appear in the summary. They will be corrected next.

MemTest86+

During operation of the RAM, various problems can occur in it, sometimes the errors are so critical that starting the operating system becomes impossible. MemTest86+ software will help you solve them. It is presented in the form of a bootable distribution that can be recorded on any medium of minimal size.

MemTest86+ starts automatically and immediately starts the RAM testing process. The RAM is analyzed for the ability to process blocks of information of different sizes. The larger the built-in memory, the longer the testing will take. In addition, the start window displays information about the processor, cache size, cache speed, chipset model and RAM type.

Vit Registry Fix

As mentioned earlier, while the operating system is running, its registry becomes clogged with incorrect settings and links, which leads to a decrease in the speed of the computer. To analyze and clean the registry, we recommend Vit Registry Fix. The functionality of this program is focused on this, but there are also additional tools.

The main function of Vit Registry Fix is to remove unnecessary and empty registry links. First, a deep scan is carried out, and then cleaning is performed. In addition, there is an optimization tool that reduces the size of the registry, which will make the system more stable. I would like to note additional possibilities. Vit Registry Fix allows you to backup, restore, disk cleanup and uninstall applications

jv16 PowerTools

jv16 PowerTools is a set of various utilities for optimizing the operation of the operating system. It allows you to configure autorun settings and speed up OS startup as much as possible, clean up and correct errors found. Additionally, there are various tools for working with the registry and files.

If you are concerned about your security and privacy, then use Windows AntiSpy and Images. Anti-Image Spy will remove all private information from photos, including the location at the time of shooting and camera data. In turn, Windows AntiSpy allows you to disable sending some information to Microsoft servers.

Error Repair

If you are looking for simple software to scan your system for errors and security threats, then Error Repair is ideal for this. There are no additional tools or features, just the essentials. The program scans, displays the problems found, and the user decides what to treat, ignore, or delete.

Error Repair scans the registry, checks applications, looks for security threats and allows you to create a system backup. Unfortunately, this program is not currently supported by the developer and does not have Russian language, which may cause difficulties for some users.

Rising PC Doctor

Last on our list is Rising PC Doctor. This representative is designed to completely protect and optimize the operating system. It has tools to prevent Trojan horses and other malicious files from entering your computer.

In addition, this program fixes various vulnerabilities and errors, allows you to manage running processes and plugins. If you need to remove private information from browsers, then Rising PC Doctor will perform this action in just one click. The software does its job perfectly, but there is one very significant drawback - PC Doctor is not distributed in any country except China.

Today we reviewed a list of software that allows you to correct errors and optimize the system in various ways. Each representative is unique and its functionality is focused on a specific action, so the user must decide on a specific problem and, to solve it, select specific software or download several programs at once.

The fact that errors constantly occur in Windows operating systems, regardless of their version, will not surprise anyone. In almost 99% of cases out of 100, they are associated with information stored on the hard drive. However, not every error is capable of correcting specific failures. Next, we will focus on the most important aspects of eliminating errors, malfunctions and failures in the system.

Why is a program needed to check your computer for errors?

As for the reasons for the occurrence of failures, they can be listed for hours. This includes incorrect shutdown of applications or the entire system as a whole, inconsistency of device drivers with the operating system, sudden power outage, physical damage to the hard drive, errors in system files or their absence, virus infection, incomplete or incorrect removal of software components, etc.

As you can see, there can be quite a lot of reasons, and not every program for checking a computer for errors is designed to provide a comprehensive solution to the problem. No, of course, you can use so-called optimizers, but, as practice shows, it is better to use highly targeted applications. By the way, you shouldn’t disdain Windows’ own tools; sometimes they help even better than third-party utilities.

System update

As you know, any version of Windows OS contains bugs and shortcomings. Sometimes this can lead to system crashes or security vulnerabilities. That's why Microsoft patches up holes with enviable regularity, releasing new updates.

By default, in any Windows OS that supports this function, the search and installation of updates is performed automatically (with a constant Internet connection). As a last resort, you can use manual search and installation in the Update Center if the automatic mode is disabled or the connection is made only at a certain time.

Drivers

Very often, errors can arise due to hardware conflicts, or rather, inconsistencies between their drivers and the system itself. Therefore, before you use any computer error correction (removal) program, you need to go to the “Device Manager” and view the conflicting devices.

As a rule, if there are any in the system, they are marked with a yellow icon with a question mark. In such a situation, you can try to install either devices from the system’s own database, which does not always work, but it is better to use a “native” disk with drivers or special applications for automatically searching or updating drivers that access directly the official resource of the equipment manufacturer. You can also add that if the system is enabled, some drivers are also updated.

Antiviruses for Windows

Viruses are a fairly serious threat to both the operating system and hardware components. The simplest example is the situation with a virus developed back in the mid-90s, when, when exposed to the system, it focused the entire brightness of the screen at one point, after which, naturally, the monitor failed.

Please note that not every regular antivirus can detect a potential threat on the fly, even with updated signature databases, because viruses grow by leaps and bounds. Here it is recommended to use portable utilities like Dr. Web CureIt! Or Kaspersky Virus Removal Tool. In this case, it is desirable that the main anti-virus software and the portable application differ in manufacturer.

Checking hard drive RAM using Windows' own tools

Now let's talk about the most common situations where errors occur. These are malfunctions of the hard drive, because all information is stored on it. Let's say right away that sometimes problems can arise with RAM sticks, but this is more likely a physical rather than a software discrepancy. And today there is no software way to resolve such conflicts. So if someone tells you that there are utilities that eliminate such errors, this is absolute nonsense. A program for analyzing errors on a computer (for RAM) - yes. But certainly not to eliminate them. A striking example is the Memtest86+ utility.

But let's get back to the errors on the hard drive. As a rule, they occur in the system partition, which affects the performance of the operating system. Logical partitions can also contain them, but in this case only the applications installed there are susceptible to failures, although, as a result, their incorrect operation or constant crashes can affect the system as a whole.

To begin with, you should use the standard scan tool, called from the disk or partition properties menu. In this case, it is advisable to use the option to automatically correct system errors. But sometimes this approach may not give the desired result.

In this case, it is better to use the command line, in which the abbreviation chkdsk is entered with the drive letter. This command is unique in that you can add additional parameters to it in the form of a right slash (slash) and the parameter letter. For example, the combination of chkdsk with: /f is similar to a check with automatic failure correction, but it works much more correctly. And there are a lot of such teams in completely different variations.

Utilities for analyzing and fixing HDD errors

If the user is not strong in the system part, let's see what can be done if you still need to immediately check the hard drive for errors. How to check? Yes, it’s very simple - use any available third-party utility.

Among them are Norton Disc Doctor, CheckDisk, HDD Scan and many others. For the most part, these are fully automated utilities that allow you to check and correct errors on your hard drive in one click.

But for experienced users there is a more powerful tool - the Victoria program. Of course, it is quite complex, but it is the most powerful of all known utilities, which has no equal in the whole world. Moreover, it works in both Windows and DOS mode. By the way, it is in the second case that it shows the best results.

Windows 7: checking system files for errors

Checking system files is quite problematic. There is no point in doing this manually, especially since not a single user can really say how many and what kind of files should be in the system. In addition, they may be present, but their structure will be damaged. What to do in this case? It's simple. A program to check your computer for errors in the system part is suitable.

The simplest utility can be called a small free program BUG DOCTOR. It is capable of automatic analysis and correction of minor errors. Alas, it does not know how to restore system files or find replacements for them.

Since most system files are made in the form of dynamic libraries with the .dll extension, a utility called DLL Suite is perfect for a complete analysis, search and automatic loading of damaged or missing components. It is very often used even in cases where the performance of Windows of any version and not just “seven” falls below the critical limit.

Applications for working with the system registry

The system registry plays one of the most important roles. Incorrect or incorrect keys can both slow down the system and cause collateral failures. Again, manual editing is a thankless task even if you have special knowledge.

This is where utilities like Registry Optimizer, Vit Registry Fix Professional, etc. come in handy. Along the way, it is worth recommending the iObit Uninstaller utility, which is indirectly related to this issue. It is designed to remove unnecessary applications and has a mode for forcibly cleaning the system from residual files and registry entries. As is already clear, this is not a program for checking your computer for errors, but rather a means of preventing their occurrence in the future due to incorrect uninstallation of applications and their components.

Comprehensive utilities

As for complex utilities, they contain almost all of the above modules and check the system automatically. But they are mainly suitable only for inexperienced users.

Today you can count a lot of them. The most outstanding are Advanced System Care, Ashampoo WinOptimizer, CCleaner, AVG PC TuneUp, Glary Utilities, Error Repair Pro, System Mechanic, Rising PC Doctor and many others. Any such program for checking your computer for errors can not only correct them, but also optimize the operation of Windows, for example, by disabling unnecessary background services.

But, as mentioned above, you shouldn’t expect too much from them, but still use narrowly focused utilities, which largely determines the final result.

Unfortunately, it is impossible to check your computer for viruses using just a website opened in a browser. The fact is that for security reasons, web services do not have access to local files and programs on the PC.

But there are cloud antiviruses that can scan the system without full installation and registration. To use one of them, just download a small client and run it. After this, you can scan your entire computer or select partitions for partial scanning. During the process, the program will download the data it needs from the cloud. If viruses are detected, the service will offer to remove them.

If you want to scan your computer using a cloud antivirus, try these services. All of them are products of well-known companies and work in a similar way - according to the scheme described above. Therefore, you can choose any of them.

Of course, such an online scanner is only suitable for periodic on-demand scans and does not provide permanent computer protection from malware and network attacks. Therefore, it is not an equivalent replacement for a paid antivirus.

Perhaps there are similar services for mobile devices, but I won’t recommend them. After all, even Android developers say that most users do not need antiviruses for this system: it is enough to install programs only from Google Play and be careful with . And iOS is too closed for viruses to pose a serious threat to an iPad or iPhone.

Web services for checking individual files

If you want to check a small file or an archive of files for viruses, you can do this completely online, without installing any programs at all. You just need to go to any of the resources listed below, upload a suspicious file from your computer to the server and click on the scan button.