Virus étrange

Mon ordinateur est attaqué depuis peu par un virus, au démarrage mon ordinateur ouvre une fenêtre avec le message suivant: Your computer was attacked by virus-encoder.
All your files are encrypted carthographicaly strong, without the original key recovery is impossible !
To get the decoder and the original key, you need to write to us at the email fudx@lycos.com with the subject encryption stating your id.
Write on the case do not waste your and our time on empty threats
Responses to letters only appropriate people are not adequate ignore.
Paybtc@india.com