Is there any certainty about computer viruses, and how to analyze whether there are viruses in your

Judging from the viruses found so far, the main symptoms are:

1) Because the virus program hides itself or part of the operating system with bad clusters, the number of bad clusters on the disk increases inexplicably.

2) Because the virus program is attached to the head and tail of the executable program or inserted in the middle, the capacity of the executable program increases.

3) Because the virus program uses a special symbol of its own as a label, the disk it touches will be specially labeled.

4) The available system space becomes smaller because the virus itself or its replicas continue to encroach on the system space.

5) Abnormal disk access due to abnormal activity of virus programs.

6) The system boot is slow due to the virus program attaching or occupying the boot part.

7) Loss of data Luchai and programs.

8) The interrupt vector changes.

9) There is a problem with printing.

10) The number of crashes has increased.

11) Generate invisible ** files or specific files.

12) The system has abnormal movements, such as sudden crash, and then starts on its own without any external intervention.

13) Some meaningless pictures, greetings, etc. appear.

14) Abnormal phenomena or unreasonable results in the operation of the program.

15) The volume label of the disk has changed.

16) The system does not recognize the disk or the hard disk cannot boot the system, etc.

17) When the system is equipped with a Chinese character library and the Chinese character library is normal, the Chinese character library cannot be called or the Chinese characters cannot be printed.

18) When using a write-protected floppy disk, a prompt appears on the screen to write protect the floppy disk.

19) Exception requires the user to enter a password.

Netstat is often used

an, check the port, and deconnect the connection.

The computer is in or back to normal operation very respectful date card blue screen or reboot for no reason

There are many symptoms, viruses that are generally not very harmful, Trojan horses will not cause harm to the computer system, and there will be no special symptoms, to ensure that the virus is killed once a day, and the virus database is upgraded once a week, and the general small viruses, Trojans and some old viruses will never happen.

Judging whether the computer is a virus, there are many of them, and I will list a few points:

1: Slow start-up, slow shutdown. Or you can't shut down, which means that you can't shut down the computer normally in the Windows interface "Start - shut down the computer - shut down".

2: The system is full and stuffed with unknown files, which is rare.

That's why you should buy books about it and study it slowly.

If you think you can, you can go down. 3q

Whether it is poisoned or not, it is best to use authoritative anti-virus software and upgrade to the latest version to make a comprehensive anti-virus judgment.

1. Crashes often occur.

2. You can't open a file.

3. The software that can usually run cannot be run.

4. Some files are hidden for no reason.

5. Long start-up time. Wait.

1.Look at the CPU in the process

The CPU is always at 100% when no programs are running

2.The computer is not working properly.

Step 3: If the above methods cannot solve the problem, then it is recommended that you contact our customer service for you. When contacting, it is best to explain what methods have been used, what operations have been done, and what are still occurring, although it is best to provide appropriate screenshots and anti-virus history.

- Dividing line ———

If there is anything you don't understand, you can ask me, or ask my team any questions in the future. (*Hee-hee.......)

12 signs of "virus" in the computer, don't you know about it? Enhance the awareness of prevention!

360 checks, to trust the professionals.

Use 360 antivirus to check and kill.

Fix the system, or install the system from the start.

yes, it's poisoned, if you do this, you will definitely do it.

It's not a virus, it's a problem with the program and memory.

Top 10 Symptoms of Computer Poisoning:

1.The computer that usually runs well becomes sluggish, slow to react, and has a blue screen or even freezes.

2.It takes longer for the program to load. Some viruses can take control of programs or system startup programs, and when the system first starts or when an application is loaded, these viruses will perform their actions, so it takes more time to load the program.

3.The size of the executable program file has changed. Normally, these programs should maintain a fixed size, but some viruses can increase the size of the program files.

4.For the same simple job, the disk took much longer to complete. For example, it would take only one second to store a page of text, but an infected virus may spend more time looking for uninfected files.

5.There is no access to the disk, but the disk light keeps on. The hard drive's light keeps on for no apparent reason, which means that the computer may be infected by a virus.

6.Unfamiliar sounds, images, or prompt messages, as well as unusual error messages or garbled characters appear after powering on. Especially when this kind of information appears frequently, it is a sign that your system may have been poisoned. 、

7.The capacity of the system memory or hard disk is suddenly drastically reduced. Some viruses consume a considerable amount of memory or hard drive capacity, and when a program that has been executed before, suddenly tells you that there is not enough memory to use, or that the hard drive space is unexpectedly reduced.

8.File names, extensions, dates, attributes, etc. have been changed.

9.The contents of the document have been altered or some strange information has been added.

10.Files disappear mysteriously.

Generally, you can feel it if you are poisoned, for example: whether the network speed of the computer is slow down and very stuck, whether the CPU and memory station usage is very high, the machine often crashes, the screen turns blue or automatically shuts down, the boot is slow, and there are some suspicious or unseen processes in the process, etc.!

Viruses are messing around.

Install anti-virus software Fen Killer.

It's too late to make amends.

This is still mainly to see the killing of soft.,If there's no hint for killing soft.,Then I guess you can't be sure.,This still depends on your usual maintenance.,Don't mess with things.,Don't open unfamiliar files and**。

If the computer slows down and can't be improved after cleaning, you have to be suspicious, but the suspicion is basically a white suspicion, because there is no prompt to kill the soft, and you have no way, unless you want to reinstall the system, but it is still a little troublesome to reinstall.

When you use it, you feel abnormal, and it feels abnormal, so check it out.

The general program will not be normal, the computer will slow down, you use the anti-virus software to scan it, and also check the Trojan.

The program is not normal, the computer is slow, the display is abnormal, and the data is lost.

To put it simply, see if your Task Manager CPU usage and memory usage are normal!

Hello, not all computers necessarily have viruses.

If you are worried about poison, you can use antivirus software to check and kill it. Method:

Friend's problem is recommended to use the latest version of the 360 system first aid kit to try in the mode with network security, if there is a virus, it will remove the virus. If no virus is detected, the system is safe.