There is a lot of paranoia on the topic of computer virusesWe often think that the malfunction of some of our hardware components is due to the action of a virus. Although it is true that this can be a cause of a virus, many other times this happens due to mechanical reasons of the physical accessories.
However, when a virus has really been installed on our disk or even worse in our operating system, all alarms must be turned on in order to clear it as quickly as possible.
We have carried out an analysis of what consequences could bring viruses on our computer, as well as how to detect if they are really viruses or failures are a consequence of other reasons. At the end of this article, we will recommend the best online tools so you can verify the existence of malware.
What consequences can a virus cause on my computer?
Being files that are dedicated to altering the operation of any computer device with or without the user’s permission, and with or without the user’s knowledge, generate different results that have a greater or lesser degree of sequelae.
Taking into account that each virus is designed for a special function, we are going to summarize the consequences that can occur on our computer as the following:
Any kind of setbacks that may occur on our computer or mobile without our consent, they are generally triggered by a virus. For example, changing the brightness of the screen, locking the screen, increasing the volume, changing tabs when we are browsing the Internet, the appearance of dialog boxes, etc.
Actions against SSD
A problem a little bigger than the previous point is when it interferes with our hard drive. For example, when you overwrite or format it, losing all kinds of information that we had in it.
If the virus acts directly on the supporting files or operating system directories, you can access it and do whatever you want, many times delete all the saved information, some steal it directly without us noticing, and completely destroy the Bios.
They also cause problems with the operating system startup, causing us to have to try the startup process over and over again.
It is true that viruses cannot damage the hardware of our computer, what they can do is act against them through the improper use of certain actions that it can handle and thus just break the hardware.
For example, can send orders to the printer so that it runs its head from one side to the other many times, or it can cause the drives we have for storage to spin quickly, causing wear on the read heads.
Another example of how a virus can damage hardware is when it emits a signal and can playing videos or songs at very high volume causing the speakers to break or burn.
A virus cannot directly interfere with a hardware or on those data or information that is protected Against writing, it is important to clarify this because many people can make big mistakes when considering that viruses are capable of doing these things.
Steps to know if my computer has a virus or malware fast and easy
In order to determine if our computer is hosting malicious software, we will have to proceed as indicated below:
The computer hangs
If we have already opened the least expected program long enough, realizing that the reason why our computer crashed does not correspond to a heavy program.
We are going to follow these steps:
- We carry out the command “Ctrl + Shift + Esc” or “Ctrl + Alt + Del”, both will take us to the task manager.
- We look for the program for which it is not working correctly
- We click on “Finalize” and the program should close as normal
If this does not happen we may be in the presence of a virus.
When it does not happen that windows to which we have not authorized begin to open, it is very likely that we are suffering an attack from a virus.
For this we will have to close the pop-up windows as follows, using the Chrome browser as an example:
- We open the browser
- We click on “More”
- We seek “Setting”
- We select “Advanced settings”
- We click on “Privacy & Security”
- We tighten “Website settings”
- We choose “Pop-ups and redirects”
- We select “Locked”
With this we are not eliminating the virus of our operating system we are simply making the inconvenience they cause us less.
Lack of hard disk space
We are always going to notice that our hard drive is full and this should not happen, we will check that there is no virus that is performing this action.
We are going to follow these steps, taking as an example the installation of a tool called Folder Size Setup Wizard:
- We open the application
- Execute as an administrator
- We choose disk C, or whatever we doubt if it is full
A report will give us the app in which it will show us through a rounded graph how much is the capacity that we have available, it occupies our operating system, how much it occupies the file programs, and how much other information.
We will detect at this moment if the disk we have analyzed is really there, otherwise it will be as we told you at the beginning an action of a virus.
To find out if a driver that we have installed on the computer is working badly, we are going to use an app to help us with this task.
We will use and install “Installed Drivers List”, which is an application that detects all the drivers that we have installed on our computer and reviews their normal operation.
The steps are:
- We open the application
- We chose to scan
- We select “Report”
- We will be able to see from this moment if it is a matter of virus or not.
Hardware performance problems
As we mentioned earlier, a virus does not break hardware, but it can influence the software that controls them.
If we do not want to analyze the hardware drivers, we can previously verify through an ocular inspection. We will review every detail, just in case there is something broken or out of place causing the malfunction.
Abnormal behavior of certain programs
When we detect that certain programs are behaving differently with respect to their previous features, we will have to analyze them through an antivirus.
We are going to install “Kaspersky Free Antivirus” for this step and follow the following instructions:
- We open the application
- We choose the place we want you to analyze the program, we recommend you for this point or the whole team
- We select “Start”
- The system will not automatically be where the error exists
- We choose “Remove”
Firewall is disabled automatically
This is one of the most obvious signs of the presence of viruses. For this we will do as the previous step we will choose an antivirus and we’ll let it run
List of the best online programs and tools to identify viruses on your computer
Online tools are Internet pages in which we can enter them without the need to apply anything prior, while extensions to browsers are small tools that we add in them and we can use them with a single click.
We can analyze not only our computer but we can also verify the content or not of viruses or malware of files and harmful URLs.
Next, we are going to name the most important tools that we have found according to our analysis:
It is a platform that is based on the automation of the same to be able to carry out malware analysis specially hosted in the cloud.
It also analyzes drivers of the operating system kernel, detecting and eliminating them under our supervision.
It is an extension to the Chrome browser
We can apply an extension to our browser so that every time we visit a page Through this extension we can avoid the installation of malicious files.
With this extension we just click on the link and write the URL that we want to analyze.
It works very similar to the Chrome browser extension, but this is intended for when we use Firefox as the default browser.
Its application is very simple and every time we want to analyze a file or a link we will only have to write in the address bar of the extension.
*Note: This extension is no longer available for download and installation in the Mozilla browser.
Extension for Internet Explorer in the We can add to analyze a probable phishing, a report will not be issued in html format.
It is characterized by the speed with which it can analyze a great variety of antivirus that it has loaded previously.
VirusTotal API 2.0 UDF
This script tool allows us different controls with which the functions can be executed more quickly. You can retrieve a scanned report, re-scan files, copy the URL and scan it later.
Panda Cloud Cleaner
It provides antivirus functions like its classic application to scan viruses or other malware that can damage our PC.
It offers the possibility of analyzing files which we will have to attach to your search bar.
It is constantly being updated so they provide a lot of security and confidence to users.
Works as an antivirus for online way that scans each of the files that we have or want to enter to our computer and also detects viruses or malware.
It offers, like almost all these tools, a bar for analysis in which we will have to enter the URL that we need to analyze it.
It provides alternatives that some other online antivirus do not offer, for example, it can scan files in the “.zip” or “.rar”. Its analysis capacity for this class of files is up to 20 MB.
EseT Online Scanner
It offers the possibility of scanning our equipment in a complete way, in addition to its traditional analysis of files and web pages. In addition to very complete and simple to understand reports.
If you have any questions, leave them in the comments, we will answer you as soon as possible, and it will surely be of great help to more members of the community. Thank you! 😉