Unlock Power-On password ■ThinkPad T400

[@hamelgful]

Great ! thank you so much ! I've just bought a used T400, and it was locked with a power on password.

[@sennasatawake5311]

This was awsome, all i had to do was unplug the battery

[@calibraladzz]

there is a few volts still left in the capacitor try shorting capacitor or wait a day with battery pulled

[@archygrey9093]

Maybe try pressing and holding the power button to help drain any power too.

[@anthonyzangue]

Muito obrigado, a aula me foi muito útil! Um abraço

[@TriforceLightning]

Thank you!

[@stellamondi9440]

thank you very much!!!! You are the best!!!! :)

[@1234gatito01]

Help me, I don´t remove the password with this process..!!! The password continue in laptop.

[@muradalam5329]

can u tell me how to do this in lenevo L420 thinkpad?

[@taseluio]

It works in a ibm thinkpad x60, thanks

[@cpuscan8272]

hey i tried to update my bios on a lenovo thinkpad t420 .something went wrong and it doesn't power on, it just beep there is a black screen, can you please tell me how to fix it with wincris and if you can please tell us how to put the files inside the usb or how to rename it or i can use the usb bios programmer tool, will that work? Can you please make a video on how to fix a black screen after a bios failed to update

[@assetoverflow]

that doesn't work on TPM laptop i.e. 90% of Thinkpads

[@marquinhos.youtuber]

Fiz isso no r40 não dá certo não ... Ou será que tem 2 baterias ?

[@mannujatav6300]

Thank you ji

[@warickrandle9261]

is there a video for the t60

[@anaeter]

I work perfect on lenovo t430, thank

[@lolo-gv3nl]

will this work on a hp probook 4440s to remove bios administrator password

[@Rajukumar-pk3is]

Sir I use Lenvo T 61. But suddanly its BIOS lock .I try your methode but not sucssesfull plz help me

[@abnad2827]

Good video 👍👍👍 Please I'm looking for a software R24RF08 and ibmpass software, my eeprom p24s08 is blocked I can't read it with ch341a and other systems. Thanks in advance

[@ronaldvivas2260]

BUENAS, TENGO UN MODELO R400 CON EL MISMO MODELO, REALIZO LOS PASOS QUE OBSERVO PERO EN LA PARTE DONDE DETECTA LA FATA DE PILA NO ENTRA SOLO AL BIOS Y EN VEZ DE ENTRAR MUESTRA OTRA VEZ EL CANDADO, POR QUE SUCEDE QUE DEBO HACER.

[@kavithapothula874]

after removing cmos batry , hav statd but there is no bootmenu

[@26shizuki]

does it work with lenovo all in one desktop? plz. help

[@yohan090]

Hola amigo tengo una r500 y aun sigue con el problema de las bios.. No me dejan hacer nada

[@kongzhang985]

Do you have videos or know how to about unlock Power-On password Thinkpad T61?

[@Joellemon77]

we're d same problem... IBM T42 Nothing more solution for this?

[@itachi2575]

I have Lenovo e49 and tried removing the CMOS battery but it only rests my time nothing else

[@carlosjosecito]

How to reset the password on the second option, you know?

[@michaelfrediquezadahervas3572]

mi lenovo ideapad 330s me pide contraseña en la bios. como podria saber la contraseña o restablecerlo.

[@hobbyhacks]

This is only for laptops without TPM security chip ...

[@emanuelponce3700]

sirve para la t430?

[@kylehenderson8569]

It is definitely possible to get around this. I have a software cd that does it.

[@MobiTrackMobileStore]

How to do with software cd?

[@arcademcFLy]

So should I never plug it back In after I unplug it... Should I just throw it away?

[@archygrey9093]

You will want to plug it back in after resetting the passwords

[@Fran_62]

Thanks.

[@jaleelkilinadan]

i want to remove the Supervisor password it's possible plz help me

[@uldza]

I don't know what password is that but I replace HDD and password was gone

[@winnielong263]

How to unlock an lenovo think pad twist su plz help

[@rafaelasousa6755]

👏👏👏👏👏👏👍👍👍👍👍

[@erikhrcruvinel4917]

I need reset boot bios password Lenovo thinkpad x200, please

[@achimhannebauer5800]

this video is not for a t400, this dosent work for t 400

[@rars0n]

It literally says "T400" right on the laptop there, chief. This is for a "power on password," if it didn't work for you, that's probably because your password isn't a "power on password."

[@kroker4000]

Any one can help me plz i have the same problem with Lenovo t61 and still not work

[@keith16381]

how do i get to recovery from power on

[@375GTB]

Not like this idiot proclaims That's for sure!

[@BrandonJaspy]

Removed the backup battery and everything. Still nothing. Still just stuck on the screen shown at 7:32

[@massimogioia4422]

+Brandon the poster is an idiot. You have to find your EEPROM and shortcut it briefly before password prompt. It gives you an access to BIOS where you have to change the admin password and restart laptop. Later on you may disable all passwords in BIOS

[@BMgoestech]

my PC is Not booting without CMOS battery

[@subashboss9931]

Like this laptop... i've hdd lock symbol. how can i reset the HDD PASSWORD... LENEVO B490, WD HDD.. KINDLY HELP ME

[@Rahulraj046]

i have same problom... did u have any way.....?

[@genedeluta1815]

I try this to my t400 but doesn't work the padlock sign still appear what keyboard should I press?

[@gabrielgomez2483]

That's because you don't have a power on password, you have a supervisor password. You can remove it but you have to short the eeprom under the computer with wire. There should be guide out there. Just search t400 supervisor password removal.

[@jaysonibanez1088]

@@gabrielgomez2483 what's the difference between the two?

[@gerrydolfo9630]

We tried this steps and idea. But it doesnt work.. Huhuhuhu

[@375GTB]

I'm not going to pull any of the CMOS Batteries in my 4 ThinkPads to find out if the EEPROM Padlock prompt black screen can be bypassed this way. Nor am I going to put the "bad" locked up mobo BACK into my 2004 R51, to test this... Superviser password is not mobo EEPROM password. Trust me. J.C.

[@ghettobeats]

I have a T420s and it didn't work

[@XXXlean]

this doesnt work

[@SunilVerma-hl6pd]

Kenobi thinpad t60 ka power no problem

[@whyisitme1830]

I took out the lithium battery but it still wants the pass

[@brahim250]

i have the same laptop and the same problem no solution but you can flash bios with GND clip.

[@guneetin]

Hello, m also facing this problem.. Im using lenovo t400 thonkpad.. After removing cmos battry it again asking for password.. So plz tell me the solution.. W8ing for ur reply

[@manishhb7864]

Same for me

[@manishhb7864]

Did you manage to solve it?

[@cindyvillagran9039]

No funciono en mi equipo, y es el mismo modelo. Alguna otra opción?

[@juancarloshernandez2946]

Estoy en las mismas, lo pudiste solucionar ???

[@manishhb7864]

@@juancarloshernandez2946 me too. Were you?

[@juancarloshernandez2946]

@@manishhb7864 No

[@nhyamaral1071]

i also have the problem like this

[@ronaldvivas2260]

...A NO SER QUE HAY QUE DARLE A ALGUNA TECLA Y NO SE VE.

[@soymodlepianiste4650]

ah la la...si c'était aussi simple....

[@luis142000ify]

funciona con una lenovo t420

[@marcaveli75]

i am enjoing apple products woow they wonderfull!

[@argaherbal6449]

Indonesia.

[@euphoria_7477]

I really hope you're not a computer tech by trade.

[@375GTB]

Truly! There would be lot of dead ThinkPad mobos in land fills.. ALL with locked EEPROM chips....

[@tomekszczepka7416]

power on pasword is not the same as SVP (SUPERVISOR PASWORD)

[@375GTB]

+Tomek Szczepka Precisely!

[@zwzinfo]

I help you contact me

[@hdjdjdjd1471]

Tomek Szczepka

[@williamjosealmeidamato7423]

buenas tarde amigo e bloqueado mi laptop tratando de salir de la bioo a hora le aprese un candado si puede ayudarme se lo agradezco

[@lolo-gv3nl]

yh

[@vijaylokhande8386]

Bhai nhi horraa

[@mi0z531]

ARIGATO GOZAIMASUUUU

[@cgsman1]

Dieses Video ist tatsächlich ein fake-Video ! SO funktioniert das bei dem Lenovo-Notebook nicht, weil die BIOS-Daten nicht gepuffert werden (über die BIOS-Batterie), sondern in einem EEPROM fest gespeichert werden.

[@375GTB]

IBM ThinkPad EEPROM Chip TThe notebook computer BIOS password is not like the desktop model password, this is easy to explain! The desktop model machine’s computer BIOS password stores it in the motherboard CMOS electric circuit. This electric circuit must depend on the motherboard CMOS battery to maintain its data. Therefore, the majority of desktop model’s BIOS passwords are stored as long as the motherboard CMOS battery doesn’t go dead, or vanish into thin air. However, with the notebook computer, if the CMOS battery is removed, the BIOS password will not disappear at all. The BIOS password is stored in the EEPROM and the CMOS battery will not affect the password. In the notebook computer, the design has a special EEPROM password memory chip. Take the IBM notebook computer as an example, the commonly used memory chip includes: 24C01A, 24C02, 24C03, 24RF08BT, 24RF08CT, 24RF08CM and so on. In different kinds of notebook computers, the EEPROM chip and other kinds of commonly used 93C46. The EEPROM chip belongs to the serial chip. The chip data certainly does not need to draw support from the outside battery to be able to be maintained. In the chip data, which writes data can maintain it for 10 years under the normal temperature. The 24C series chip generally used in IBM ThinkPad 600E machine and the 380, 390, 600 and other models. The 24RF series chip, uses the improvement data transmission and the preserved way. Keeping secret the performance to be stronger generally is used in the 600E later machine, like 600E, A, T and R series. Like the charts below, the IBM TP600 on the notebook computer motherboard EEPROM password memory chip is located on the motherboard nearby the PCI main line control chip. The chip model is AT24C01A. When the user password is established and the preservation of the BIOS is established, the system carries on the operation and compression processing. Then the user inputs the password and processes the password data preservation in the EEPROM password memory chip. It has been clear about the EEPROM chip mode, which the BIOS password saves on the chip and can be located on the motherboard. If you have really forgotten the password, there is a possibility to let "the machine discards" this event occurrence, because each notebook merchant has already inform users not to forget their password. This situation carries on to the maintenance manual, if you are really persist on repairing the notebook then one should prepared himself to take out money to replaces the new motherboard.

[@BojanDraksic]

375GTB aqaaa

[@375GTB]

AQAAA What?

[@rwancristiano3447]

HII I DONT UNDERSTANSTAND WHAT YOU SAID CAN YOU SHOW THAT BY VIDEO THANK

[@wonggendheng4151]

🤣🤣🤣 fail bro

[@edsonsantoss-guitarras]

no funciono.

[@technics6215]

Try this with real ThinkPad made by IBM :D

[@375GTB]

Lenovo has MADE all those "IBM" ThinkPads. Since Day One.

[@technics6215]

***** So, Lenovo started making worse and worse laptops after IBM sold them ThinkPad brand... I had many T-series notebooks. These with IBM logo were waaay better designed in my opinion.

[@viaitoionline86]

fake

[@RajeshPal-yi2hv]

bc

[@elenaramirez6035]

Fake!!!...

[@indiaarmy1268]

Fack chitar

[@cungnsum]

Hahaha you couldn't do and o could not did

[@375GTB]

Nei Cung Spreak Engwish Troops! Ding Hao Charlie One Red Eye..