lol=msgbox ("Warning an endemic has been detected on your computer. Press affirmative to format your disk currently or press NO to format your disk once system reboot",20,"Warning")
Then reserve it as Virus.VBS
and move to the folder that contains it and open it if a window pops out locution an endemic has been detected it's operating. Press affirmative or no to shut the window and place it within the startup folder of the victim's account.
On startup the window ought to seem.
Note: This doesn't damage your pc because it doesn't contain virus.
The affirmative and no button doesn't do something except closing the window. And you'll be able to edit the virus within the sentence: Warning an endemic has detected on your computer to any reasonably virus eg.Trojan Horse like this lol=msgbox ("Warning a malicious program has been detected on your computer. Press affirmative to format your disk currently or press NO to format format your disk once system reboot",20,"Warning")
Oh in between ensure your victim doesn't panic and very reformat his harddisk. hahaha