Intel anti theft locked

hi,

I have Toshiba Kira ultrabook,  I can't access it through windows cause message prompt like this below;

This computer has been disabled using intel (R) AT.

Intel (R) AT system lock due to :Platform Attack Detected

Time Left to enter passphrase : 897 second

Please select one of the following for platform recovery:

    1. - Passphrase

    2. - Server Recovery Token

Select one of the above options to proceed...

Invalid Selections, Press 1 or 2

Unlock with Norton Anti-theft http://goo.gl/gccEG

 I never activate it,

I need solution .

Thank you.