Answer:
bomb virus- sets off and abunch of blank windows open( I had it too :( )
weegee virus- Mouse cannot move and black screen of weege poops of and weegee says something then your computer catches on fire!
I love you letter- A letter opens and i dont know what happens next?
Pacman virus- Starts as pacman but not quite, Its starts to eat your files and Guess what? All your files will be eaten by the evil pacman.
That are only the viruses i know