Northon anti theft

Hello,
Following a Bios battery change,
I now have a message at boot bios:

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(link is external) (link is external) (link is external)

Platform ID : 0000391C

Intel (R) AT service provider ID :15000

how can I deactivate this intel anti theft?

I call norton support which can do nothing for me because the product is no longer bear.

The software has been uninstalled a long time ago but it will appear that norton anti theft does not disable the hardware function once uninstall.
I have not had this code for a long time.
I try all my passwords, none works :(

Please help