Problem with fingerprint reader after the upgrade BIOS to version A07

goodmorning,

 

I have some problem with my Latitude D820. - win XP sr-2

 

a few days after to have installed the new version of BIOS (latest version is A07) the fingerprint reader doesn't work more.

To the start of the notebbok a Bios Message appear  "BIOS DID NOT ABLE TO FIND THE FINGERPRINT READER...."

 

Have you some suggestion for me ?

 

many thanks in advance.

 

PS "I'm sorry for my bad english"

 

Roberto from Milano (Italy)