Aussie bob makes a good suggestion - be absolutely sure that you are accessing Silk Road from the correct url:silkroadvb5piz3r.onionAlso be sure you are using the Tor Browser Bundle, Tails, or Liberte, rather than a non-Torified connection of some sort.If this still doesn't solve the problem, you'll need to create a new account on the main site and send a message to customer support there with information about the last btc deposit you made (to help confirm the account belongs to you). They'll be able to reset your password for you, but I'm not sure that's the problem since you're not even receiving a "login failed" error message.