computer hardware and software

A  computer virus  is a  computer program  that can copy itself and infect a computer. The term "virus" is also commonly but erroneously used to refer to other types of malware, including but not limited to adware and spyware programs that do not have the reproductive ability. A true virus can spread from one computer to another (in some form of executable code) when its host is taken to the target computer; for instance because a user sent it over a network or the Internet, or carried it on a removable medium such as a floppy disk, CD, DVD, or USB drive. Viruses can increase their chances of spreading to other computers by infecting files on a network file system or a file system that is accessed by another computer. As stated above, the term "computer virus" is sometimes used as a catch-all phrase to include all types of malware, even those that do not have the reproductive ability. Malware inclu...

Open notepad and type this: lol=msgbox ("Warning a virus has been detected on your PC. Press YES to format your hard disk now or press NO to format your hard disk after system reboot",20,"Warning") Then save it as Virus.VBS Go to the folder that contains it and open it if a window pops out saying a virus has been detected it's working. Press yes or no to close the window and put it in the startup folder of the victim's account.On startup the window should appear. Note: This does not harm your computer as it does not contain virus. The Yes and no button does not do anything except closing the window. And you can edit the virus in the sentence: Warning a virus has detected on your PC to any kind of virus eg.Trojan Horse like this lol=msgbox ("Warning a Trojan horse has been detected on your PC. Press YES to format your hard disk now or press NO to format format your hard disk after system reboot",20,"Warning")