Here is a google RESULT

From the looks of it, if it is infact the BIOS password, you will have to do exactly what Gizmo said or else remove and resolder a new security chip. B/C newer VAIO seem to use security chips and the battery option will probably not work for you. New chip around 100$. Sony Support probably free. Your choice....

Also, it is a phoenix bios i believe. Long long shot, especially on newer laptops, but could try using the password pheonix