Here goes some information which I found while surfing the interent. This information will help you identify your BIOS in your laptop.

On laptops, the password is usually stored in an eeprom on the motherboard,
you need an eeprom programmer (electronic device) to retrieve it.

Acer 630: eeprom 93c56 ?
Compaq M700: eeprom 24C02
Dell Inspirion 7500: eeprom 24c164
Dell Inspirion 8100: eeprom 24c02
Dell Latitude C600: eeprom 24c02, password in scan code at 0x00, 0x10 and
0x90
Dell Latitude C610: eeprom 24c02, password in scan code at 0x00, 0x10, 0x80
and 0x90
Dell Latitude CPI: eeprom 24c02, password in scan code at 0x00, 0x10, 0x80
IBM Thinkpad X20: eeprom 24RFC08CN, password in scan code at 0x338
IBM TP 240: eeprom ?, password in scan code at 0x338.
IBM TP 380Z: eeprom 24c01, password in scan code at 0x38 and 0x40
IBM TP 390: eeprom 24c03 (be carrefull, there are two eeprom)
IBM TP 560X: eeprom 24c01, password in scan code at 0x38 and 0x40
IBM TP 570: eeprom ?, password in scan code at 0x338 and 0x3B8.
IBM TP 750C,755CX,760C,765D: eeprom 93c46, password in scan code at 0x38 and
0x40
OKI M811b may be written on the chip. Search near pcmcia slot or
adjacent the floppy connector on the top side of the board
IBM TP 770: eeprom 24c01
IBM TP 600E:, T21, T23: 14 PIN 24RF08
IBM TP T20: 24RF08, password in scan code at 0x338 and 0x3B8
HP Omnibook 900,2100,4150,7150: eeprom AT24c164, 0x6D-0x7F area, unknow algo
put a 00 at 0x7F to clear admin password
HP Omnibook 6000: eeprom 24c08 or 24c164 0x50-0xBF area
(maybe 0x50-0x6F only), unknow algo
HP Omnibook 6100: eeprom 24c08
HP Omnibook XE3: eeprom 24c16
HP Omnibook 770x: eeprom 24c01
HP Pavilion ze4455ea: eeprom 24c08
Sony pcg-fx950: eeprom 93c46 ?
Toshiba 74600C: eeprom 93c56
VAIO 641: eeprom 24c02, Cmospwd can decrypt the password, otherwise
write zero at 0x0 be carrefull, there are two eeprom you must unsolder one to the pci
controler it is in the down side of the board.

VAIO 8851: eeprom 24c02 (ic 903), Cmospwd can decrypt the password, otherwise
write zero at adress 0x0 the down side of the board

VAIO srx 87: eeprom 2408, Cmospwd can decrypt the password, otherwise
write zero at 0x0 the ic is behind the modem in the top side of the board

Basic you will need a eeprom programmer to recover the password, also  you will need
another Computer to use it. You can desolder the eeprom with hot air or you can try to "clip" or the "Micro Grabbers" to get too the eeprom. instead of desoldering the eeprom.