Dell D640

Dell D640 The Chip is on the bottom of the motherboard just to the left of DIMM 1. Damn I can't work out if this is 6400 as well. It would be good if others replied I have created a small list of Dell IC Numbers corresponding to the Dell Model (Note: I've since added other models to this) Please help me (as before, but no response yet) confirm the following And/Or Edit Add any others [B]This list is not in order, as I keep adding to it[/B] DELL latitude cpi r-series = 24c02A DELL D800 = 24Lc04B DELL D400 = 24C04 DELL D410 = 24c04n DELL D505 = 24C02 Dell D520 = IC EMC4000-FZG (keyboard controller) DELL D600 = 24c04 DELL D610 = 24c04n *Dell D620 = IC EMC4000-FZG (keyboard controller) IC 45PE20 (M45PE20-V STE). *Dell D640 = 25L8005M2C *Dell 6400/e1505 = *Dell D820 = IC EMC4000-FZG (keyboard controller) Dell Inspiron 1100 = 24c168 Dell Inspiron 1300 = 24C04N DELL Inspiron 5100 = 24LC16B Dell Inspiron 510m = 24c04 DELL Inspiron 8000 = X24c02 Inspiron XPS = C24O4N Dell Latitude L400 = 24C02 (remove cmos battery 5mins to clear only) Here's some more Compaq M700: eeprom 24C02 Compaq M700: eeprom 24C02 Dell Inspirion 7500: eeprom 24c164 Dell Inspirion 7500: eeprom 24c164 Dell Latitude C600: eeprom 24c02, password in scan code at 0x98 and 0xA8 Dell Latitude C600: eeprom 24c02, password in scan code at 0x98 and 0xA8 Dell Latitude CPI: password in scan code at 0x00, 0x10, 0x80 Dell Latitude CPI: password in scan code at 0x00, 0x10, 0x80 IBM Thinkpad X20: eeprom 24RFC08CN, password in scan code at 0x338 IBM Thinkpad X20: eeprom 24RFC08CN, password in scan code at 0x338 IBM TP 380Z: eeprom 24c01, password in scan code at 0x38 and 0x40 IBM TP 380Z: eeprom 24c01, password in scan code at 0x38 and 0x40 IBM TP 390: eeprom 24c03 (be carefull, there are two eeprom) IBM TP 390: eeprom 24c03 (be carefull, there are two eeprom) IBM TP 760C,765D: eeprom 93c46, password in scan code at 0x38 and 0x40 IBM TP 760C, 765D: eeprom 93c46, password in scan code at 0x38 and 0x40 IBM TP 770: eeprom 24c01 IBM TP 770: eeprom 24c01 IBM TP 600E, T21: 14 PIN 24RF08 HP Omnibook 4150,7150: eeprom AT24c164, 0x6D-0x7F area, unknown algorithm HP Omnibook 4150.7150: eeprom AT24c164, 0x6D-0x7F area, something unknown HP Omnibook 6000: eeprom 24c08 HP Omnibook 6000: eeprom 24c08 HP Omnibook 770x: eeprom 24c01 HP Omnibook 770x: eeprom 24c01 Toshiba 74600C: eeprom 93c56 Toshiba 74600C: eeprom 93c56 Here's some more 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 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, HP Omnibook 6000: eeprom 24c08 or 24c164 0x50-0xBF area HP Omnibook 6100: eeprom 24c08 HP Omnibook XE3: eeprom 24c16 HP Omnibook 770x: eeprom 24c01 HP Pavilion ze4455ea: eeprom 24c08 HP VECTRA VL18: [url]http://h200001.www2.hp.com/bc/docs/s...3/lpv06673.pdf[/url] Sony pcg-fx950: eeprom 93c46 Toshiba 74600C: eeprom 93c56 VAIO 641: eeprom 24c02, 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), VAIO srx 87: eeprom 2408, Dell laptops with service tag —2A7B (new at models 2008) with service tag —595B: with service tag —595B with bug in BIOS of master password calculations with service tag —A95B with service tag only with 5-digit code Sony with 16 chars xxxx-xxxx-xxxx-xxxx onetime key, 7-digit master password Sony VGN-A 4 hex xxxx code, 7 letters master password Sony 7-digits serial: Fujitsu-Siemens 5x4 digit xxxx-xxxx-xxxx-xxxx-xxxx code other codes… much other brands Mostly all desktops may be unlocked by removing coin battery or by special jumper. Laptops have EEPROM which cannot be cleared by removing battery. Many customers forgot their passwords, especially after vacation or many beers, sometimes it laptops from ex-employee or purchased on garage sale. Many computer models can be unlocked by master password which depend from password, serial number or even random generated after special procedure. Master passwords can be generated by special tools, mostly all are not worldwide available, very few persons have it. [5-digit code] More often case is computer bios by Phoenix, which use 5-digit code after 3 unsuccessful tries to generate master password. Bios from Phoenix used by practically all brands with some modifications in the code calculation. For HP Omnibook and HP Pavilion to get 5-digit code need to press F2 F12 at password prompt. For example usual hash code: [12345] password: 1134334 HP models hash code: [12345] password: 1221196 [DELL service tag] Dell use service tag to generate master password. Usually it ended with —595B. Some models used modified algorithm for —A95B service tag which sometimes differ from —595B Obsolete models may use —D35B tag for that exist freeware utility Inspiron 700m and 710m use only service tag without suffix like —595B Very old models have special master passwords but such models are junk now. Master password generate separately for BIOS and HDD, because for HDD used its 11-letters serial number. For old Dell laptops exist so called Paperclip method, it works but dangerous, many laptops are bricked now For example: service tag: 1234567—595B password: 46rg65ky service tag: 1111111-A95B password: 2qhuvn1b service tag: 1234567-D35B password: 5tc8q9re HDD serial number: 123456789AB-595B password: 76sf9hsl HDD serial number: 123456789AB-A95B password: 5m8oalqm Inspiron 700m: [1234567] password: 37897101 [SONY] Sony PCG series can be unlocked by last 7 digit from serial number Sony VGN-A series after 3 tries it generate random xxxx — 4-hex code Sony VGN other series after 3 wrong tries it generate random 5x4 code, do not turn off laptop until get master password For example: Sony VAIO VGN-SZ22 [268r-dkxj-38j7—9j2k] password: 33637436 [Fujitsu-Siemens] This brand use many different algorithms to calculate master password Main code: xxxx-xxxx-xxxx-xxxx-xxxx 5x4 digit, to get it enter 3 passwords one by one: 3hqgo3 jqw534 0qww294e Do not enter again passwords until you get master password Other variants is 5-digit code, 8-digit code, 5x4-hex code, need to know exact model as many models has different calculations. Some models have PIN-lock panelm which can be unlocked by erasing concerned EEPROM For example: LifeBook Q2010: 1111—2222—3333—4444—5555 password: 8i4wjlon For example: Amilo Pro V3205: 12345678 password: 2171081 [Asus] Asus laptops use current date which show at system start up to generate masterpassword. For example: 2007—12—31 password: LAOLDOA0 [Acer] Mostly used Phoenix 5-digit code to get master password, various algorithms v1 [12345] password: 1134334 v2 [12345] password: B5P1HA7 v3 [12345] password: 1123155 v4 [12345678] password: 03023278 [HP] HP use classic Phoenix 5-digit code and HP modified 5-digit code There is also HP-Compaq models, which can be unlocked by manipulations with battery and charger For example: System Hash Code [12345] password: 1221196 [Samsung] Samsung use 16-hex code which appeared after 3 unsuccessful tries to restore forgotten password For example: System Disabled [153E0FC8C7B03144] password: SAMSUNG [Toshiba] Old laptops can be unlocked by floppy key disk, LPT key, USB key. Current models use Challenge method: at password prompt press keys one by one: CTRL, TAB, CTRL, ENTER. Computer will respond with PC Serial number and Challenge code. You have to respond with Response code Some Toshiba use Phoenix 5-digit code, but it appear for very short time, you have to use camera to catch the code. Challenge method have at least 3 modifications. 1) for laptops like Qosmio F10, all algorithm located inside BIOS except one calculation on the other side 2) for laptops like Tecra M4, core of algorithm hidden inside of EC/KBC chip with encrypted firmware 3) the same laptops but with corrupted eeprom contents which connected to EC/KBC