Impossible de formater mon pc portable à cause d'un virus

bonjours, mon pc HP envy a été infecté par un virus, et j'ai essayer de le formater à l'aide d'une clé USB mais une erreur s'affiche '' Windows failed to start a recent hardware or software change might be the cause ... "
je trouve aussi un fichié text partout avec un message suivant :'' ATTENTION!

Don't worry, you can return all your files!
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Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.


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Reserve e-mail address to contact us:
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Your personal ID:
0337gSd743dIf5Hu0CZEFxKDQimDVzU4nLqT424BNpN7odNoZrW

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je ne sais pas quoi faire, besoin de vos conseils