As we all know, computer viruses can cause a lot of software failures, which will bring us some unnecessary troubles. So what is the harm of computer viruses? The following decoration home decoration network Xiaobian will bring you the details of the computer virus hazard , I hope everyone can understand the next medicine.
What is the harm of computer viruses?
The harm of computer viruses 1. Interfere with the normal operation of the system. The main symptoms are that the instructions are not executed, the internal heap overflows, the system runs slower, and often crashes or restarts.
The harm of computer virus 2, interference screen display, the display can not display properly, there will be some abnormal prompts on the screen, some characters are not displayed properly.
The harm of computer virus 3, the printer can not print normally, some virus programs will cause the printer to not print properly, no paper for no reason, such as lack of paper;
The hazards of computer viruses 4. Destroy files. All executable files, some Office document templates, etc. are infected objects. The files attacked by viruses can be any type of files. The attack methods include automatic deletion of files, overwriting of files, automatic file name change, and partial data loss.
The harm of computer viruses 5. Destroy the network system. Some mail virus programs will automatically send some spam to network users via the Internet, causing network congestion and so on.
The harm of computer virus 6, damage to the system data partition, this is also the most serious damage behavior, mainly in the hard disk partition table, the boot sector of the floppy disk and the hard disk is destroyed, the file allocation table, the file directory is automatically changed, etc., these data Once it is destroyed, it will be quite difficult to recover, so it is recommended that users back up some important data in the computer in time.
The harm of computer viruses 7, interfere with the mouse and keyboard. A virus program can cause the keyboard to temporarily fail, sometimes causing the mouse to be short-lived.
The harm of computer viruses 8, affecting audio and video. Sometimes when the virus breaks out, the system will send out some hints or release some unusual music.
Hazards of computer viruses 9. Damage to CMOS information. Many virus programs can automatically modify CMOS information, resulting in some error messages when the system starts up.
Computer Viruses 10, BIOS and video card BIOS damage to the system, the current user's BIOS chips are scalable FLASH ROM, when the user performs upgrade the BIOS, the system will put a new BIOS program is written into the BIOS chip The virus program can also do this, they can also inject the virus program into the BIOS chip, which will cause the computer to appear black screen when starting up.
The harm of computer viruses 11, affecting memory allocation. The operation of the virus program itself will occupy a certain amount of memory, and some virus programs will deliberately occupy some internals, so that the user always reminds the memory when running other programs.
The above is what harm does the computer virus brought to you by Xiaobian ? The full details of the hazards of computer viruses , I believe that everyone has a basic understanding of the harm of computer viruses after reading this article, if you want to know more about decorative advice, please click to enter the decorative knowledge channel .
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What are the common computer viruses? Common computer virus types
What is a computer virus? What are the characteristics of computer viruses?
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