Computer Virus
General
A Computer virus is a destructive program that can crash the system. There are three most comon types of destructive computer programs are the Trojan horse, Logic bomb and the worm. The virus may be a memory resident waiting to be activated.
Virus can corrupt the boot record and makes any application to malfunctioning. Some viruses affect the .exe and .com files.The virus can be spread by reading files from infected floppy or downloading files from the internet.Once activated, it will start to infect other system files and application files and the important data may be lost. Some viruses target some specific application and affects overall performance of the system.
Virus Removing tools
The virus can be cleaned from the system by using some virus removing tools.These tools can remove lots of viruses. It is a just another application, occupying some disk space and monitoring the system all the time system is on.
Some tools monitor the e-mail and downloaded file from the internet, this called firewall.The virus removing programs have special instruction written in some script which checks the entire file and finds some danger words such as �Format�, �Delete�.
Removing virus
Virus removing process is easiest one. The process is described below.
Open the virus removing application.
Finds out the system scan and begin the scan.
It also allows checking individual file, folder and drive.
Right click on the file, folder or drive to be checked.
Click on the �Scan with VirusRemove�; and just leave the system as it is!