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  • How to Reset a BIOS Password

    On PCs, the BIOS (Basic Input/Output System) is updatable computer firmware designed to initialize the computer during start prior to handing control to the operating system. Due to the sensitive nature of the system settings controlled by the BIOS, a password can be set by either the computer manufacturer or the end-user. Some of the most common BIOS producers include AMI, AWARD, IBM, and Phoenix with many manufacturers making their own changes to the firmware prior to selling a computer on the open market. The common methods to reset BIOS password include: Generating a BIOS password using a hash code, entering a backdoor BIOS password, reset the BIOS password using software, reset the BIOS password using hardware, and resetting the BIOS password with vendor specific solutions.

    How Does the BIOS Work?

    The computer BIOS is the first programming code executed by a PC when the machine is rebooted or turned on. The computer firmware conducts a power-on self-test of the system which is responsible for identifying system hardware and initializing components such as the CPU, hard drive(s), RAM, video card, mouse, and keyboard. Once the initialization task is Dallas Semiconductor DS1687-3 Real Time Clock. This IC stores BIOS setup information, including the BIOS password.complete, the BIOS checks the boot devices in order of configured preference (traditional default setting is the computer’s hard drive). The boot loader software is executed by the BIOS once located, and control of the computer is then passed to the operating system. Functionality that can be changed by the end-user through the BIOS user interface (UI) include setting the system clock, enabling or disabling system hardware, configuring hardware, enabling or setting passwords, and choosing the order of boot devices.
    Although the BIOS was originally stored on a ROM (read only memory) chip on the computer’s motherboard, today’s computers will store the firmware in flash memory or EEPROM chips that can be updated after the computer has been sold. Once Intel started producing chips for use on non-PC hardware such as Macintoshes, a successor to the legacy BIOS system was required and is called the Extensible Firmware Interface (EFI). Although EFI provides a number of improvements over the traditional BIOS, it has not yet gained market dominance on PC’s.

    Is There a BIOS on Mac OS X?

    Prior to the production of Mac computers using x86 or Intel chips during the later portion of the 2000’s and their use of EFI, OpenFirmware was the BIOS equivalent on all Macintosh computers. OpenFirmware provides similar functionality on a Mac as the BIOS and EFI do on other computing systems. It conducts tasks such as locating attached or installed hardware and uses environment variables to direct the boot process for the Mac. To access the interface for OpenFirm, press the power button on the mac for about 10 seconds. While pressing the power button, simultaneously depress the “CMD,” “OPT,” “O,” and “F” keys once you hear an audible “chime.” Once you are done with the required modifications in OpenFirmware, exit the interface by typing “bye”, “boot”, or “mac-boot” (depends on the version of Mac computer you are using) followed by pressing the “return” key.

    How to Rest a BIOS Password By Using a Hash Code

    A lot of the major computer manufacturers use a master password generated from a hash code to reset the master BIOS password. This hash code is normally calculated from a unique equipment identifier such as the Serial Number, Service Tag, System ID, or Express Service Code. On many brands of computer, the identifying code will be displayed after the BIOS password has been entered incorrectly three times in a row. On other brands, it may be printed on the computer. On some HP models of computer, the hash code will only display if the “F2” or “F12” keyboard function key is press prior to entering the incorrect password a third time.
    A free service provided by Tech FAQ (other websites will charge you) is our BIOS password generation tool. The tool is designed to make a BIOS password that will work on many computer brands to include: Compaq, Dell, Fujitsu-Siemens, HP, Samsung, and Sony models. The tool has also worked for many white-label PC’s running Phoenix or Insyde BIOS. Tech-FAQ.com recommends end users that desire to reset the BIOS password for their respective computer try the hashcode generator before paying another company money to conduct the same task. Many times, third party companies will simply charge individuals upwards of $40 USD to obtain the same information provided for free here:

    BIOS Password Generator Tool

    Finding the Backdoor BIOS Password

    In addition to creating a BIOS password from a hash code, a number of BIOS manufacturers also implement an explicit backdoor password. This password will work regardless of the presence of a manually set BIOS password. The primary purpose of a manufacturer’s backdoor BIOS password is for maintenance and testing evolutions. These passwords are changed periodically by the respective company and success will vary across brand and age of computer.
    The reported BIOS backdoor passwords to date include:

    Manufacturer BIOS Password
    Award BIOS ,01322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA, and ZJAAADC.
    Russian Award BIOS %øåñòü ïpîáåëîâ%, %äåâÿòü ïpîáåëîâ
    Phoenix BIOS BIOS, CMOS, phoenix, and PHOENIX.
    VOBIS & IBM merlin
    Dell Dell
    Biostar Biostar
    Compaq Compaq
    Enox xo11nE
    Epox central
    Freetech Posterie
    IWill iwill
    Jetway spooml
    Packard Bell bell9
    Siemens SKY_FOX
    Toshiba Toshiba

    How to Reset the BIOS Password Using Software

    A popular option for end users to reset the BIOS/CMOS password is to use third party software.

    CmosPWD  is a free application that can be used to retrieve and decrypt the BIOS password. It also provides backup, restoral, and erasing capabilities. The program is proven to work with the following BIOS types:

    • AMI BIOS
    • AMI WinBIOS 2.5
    • Award 4.5x/4.6x/6.0
    • Compaq (1992)
    • Compaq (New version)
    • IBM (PS/2, Activa, Thinkpad)
    • Packard Bell
    • Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
    • Phoenix 4 release 6 (User)
    • Gateway Solo – Phoenix 4.0 release 6
    • Toshiba
    • Zenith AMI


    How to Reset the BIOS Password By Removing the CMOS Battery

    One of the most common methods to reset the BIOS password is to remove or discharge the battery on the computer’s motherboard. If the power to the battery is lost or drained, the BIOS configuration will be reset to the factory state with no password. System settings made to the BIOS will also be lost.
    Step 1 – Turn off the computer and ensure it has no external power (ie unplug the power cable. If it has a battery, remove it).
    Step 2 – Open the computer’s case or box.
    Step 3 – Locate the computer’s motherboard and look for the white silver button battery on the motherboard.
    Step 4 – If the battery is not soldered to the motherboard, remove it carefully and wait for approximately 30 seconds.
    Step 5 – Put the computer case back together and boot the computer.
    Step 6 – If the “CMOS Checksum Error-Defaults Loaded” error message is displayed, the BIOS password has been reset.
    In the event the CMOS battery is soldered to the computer’s motherboard, you will want to seek a different method to reset the BIOS password on the computer.

    Steps to Reset the BIOS Password Using Hardware

    If the CMOS battery is soldered to the computer’s motherboard, some brands will have a jumper located on the board that can be used to reset or clear the BIOS password. The location of the jumper on the motherboard will be contained in the motherboard documentation. If you can not find documentation on which jumper will reset the BIOS password, some users will guestimate on which jumper is the appropriate by choosing the one closest to the battery for reset. Another option is to short the points of the battery connection pins to the motherboard (when there is no power being applied to the computer).

    Steps to Reset the BIOS Password Using the Real Time Clock

    If attempts at resetting the CMOS battery through removal or by jumper fail, another method is to reset the Real Time Clock (RTC) Integrated Circuit (IC) on the computer’s motherboard. This method will work if the RTC requires an external battery. To reset, simply remove the RTC from the motherboard socket with no power available to the computer and reseat. The RTCs reported to require external batteries include:

    • Dallas Semiconductor DS12885S
    • TI benchmarq bq3258S
    • Motorola MC146818AP
    • Hitachi HD146818AP
    • Samsung KS82C6818A

    If the RTC contains an integrated battery, it can typically be reset by shorting two of the pins for several seconds after power has been removed from the system.

    How to Reset the BIOS Password Using Vendor Specific Solutions

    Resetting a Dell BIOS Password
    For information on how to recover a Dell BIOS password, please refer to How do I reset Dell BIOS password?
    Resetting an IBM ThinkPad BIOS Password
    For information on how to recover an IBM Thinkpad BIOS password, please refer to How do I reset an IBM ThinkPad BIOS password?
    Resetting an IBM Aptiva BIOS Password
    Some IBM Aptivas can bypass the startup BIOS password if both mouse buttons are pressed repeatedly while booting the system.
    Resetting an Acer BIOS Password
    For information on how to recover an Acer BIOS password, please refer to How do I reset an Acer BIOS password?

    How to Turn Off the BIOS Password

    Once end-users obtain the master BIOS password for the target computer, a common task to accomplish is making the computer stop asking for the password when restarted or rebooted.
    Step 1 – Restart your computer.
    Step 2 – Press the BIOS access key during computer restart (F2 on many models, Tech-FAQ listing of common BIOS access keys).
    Step 3 – Use the keyboard arrow keys to locate the security tab in the BIOS setup.
    Step 4 – Locate the submenu that lists menu items similar to:
    Supervisor password is: set
    User password is: set
    Step 5 – Use the keyboard arrow key to navigate to the available options and press the first password setting.
    Step 6 – Enter the current BIOS password in the subsequently displayed menu prompt. Some BIOS types will ask for the password to be entered twice.
    Step 7 – Change the password setting to blank, not set, etc.
    Step 8 – Repeat steps 5-7 for the subsequent password options that indicate they are “set.”
    Step 9 – Navigate to the BIOS “exit” menu option and choose the “save changes” menu option.
    Step 10 – Continue to exit from the BIOS setup and restart your computer for the changes to take effect.

    Please use the password generator tool above before asking for password in the comments.

    Got Something To Say:

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    1. Hajian H

      3 March, 2017 at 6:49 pm

      Hi.I forgot my setup password. Can you help me with my BIOS password on a Samsung laptop NP-R528.
      Excuse me , my English not very good.
      Thank you for your help.

    2. Emiel

      11 February, 2017 at 8:34 pm

      I need the Masterpw for Fujitsu Lifebook
      Hashcode 0222-0703-4003-2617-7492-0195

      ive tryed so much nut helped

    3. aman malviya

      9 February, 2017 at 10:26 am

      I generate code for my lenovo G580 laptop but the code is 8digit number and the the digit of that password is 7 only

      Plz help help

      • aman malviya

        9 February, 2017 at 10:27 am

        Plz reply me on //rajeshmalviya003@gmail.com //sir

    4. Sirwan Doski

      4 January, 2017 at 1:57 pm

      how to remove bios password in toshiba M45-S165 Laptops??

      reply me “sirwan04@gmail.com”
      please help me

    5. Luis Villagra

      11 December, 2016 at 11:21 pm

      please help my notebook unlocked, is compaq presario 21n series, phoenix securecore tiano bios ver. 77B 2009-2012, Unlock key hint number EF3915D5, thanks

    6. Boudissa Boulanouar

      8 December, 2016 at 11:17 pm

      an this code no reply in generator:
      fujitsu s762


      7 December, 2016 at 1:26 pm

      Amazing it worked on my Acer packard bell , Thanks much

    8. Boss

      5 November, 2016 at 4:31 am

      Please help me bios password.. key VFVJ-RVJTHV9K-DTK3

    9. Oluwashina Omo Egba

      10 September, 2016 at 9:12 am


    10. otnas

      7 September, 2016 at 10:06 am

      Phoenix failsafe 16 code key

      I turned my Samsung laptop on in the
      morning and it came up with a black screen asking me for a 16 code key, i
      haven’t installed the failsafe software, what is the key!!
      model code: NP-N150-HAZ1IT Samsung
      Please, 16-digit code to unlock. thank you

    11. Khaled ALassbahi

      22 July, 2016 at 3:39 am

      Hi all i have problem with the biospassword . Dell insprion 4050 . Service tage is 9NBVGP1 . I ask for halp

    12. moira

      19 June, 2016 at 3:30 pm

      hi all have a major problem my toshiba satellite m200 will not let me get past the main password ive tried to get into the bios system but it wont let me it wants a password which i didnt put on , it did .PLEASE HELP ME

    13. Fırat Karakuş

      4 May, 2016 at 9:47 pm


      Three days ago i wanted to delete my bios password.I went in to bios,Entered my current password and leaved blanks on the “Enter new password” ,”Confirm new password” parts and just clicked enter.After i restarted my pc,it asked for a bios password.I thought i forgot to save the changes and entered my password again.It did not work.Tried again,but no.So i realized that im in big trouble.I’ve been trying to reset the bios password for three days.I’ve done everything what internet says but nothing works.

      I’ve removed CMOS battery for several times,i have tried to generate or find backdoor passwords but when i fail my password trying to enter to the bios,it doesnt give me any “hash code”.It just says system will halt and shuts down the computer.I have tried to generate a backdoor password from my serial number.It worked but the password i got didnt do the trick.Im about to go crazy.

      So,i cant do anything.I have an Acer Travelmate 8372.Bios is Insyde H2O . Does anyone have any idea?Please help,i’m dying here!

    14. Jenn

      20 April, 2016 at 11:55 am

      can someone please give me the password for my Dell Inspiron 14… service tag:S/N is JZN7932.. any help or info will be greatly appreciated. Thanx in advance!

      • Patrick

        12 July, 2016 at 8:21 am

        Just contact dell. Give them your service tag number and they will send you the master key.

    15. Morgan Fox

      31 March, 2016 at 2:01 pm

      Please Help with Dell E6320 ASSET : 4HSDFS1-1D3B thanks !

      • Patrick

        12 July, 2016 at 8:19 am

        probably a little late to the party.. Just contact dell. Give them your service tag number and they will send you the master key.

    16. dmanga

      21 March, 2016 at 1:22 pm

      hey,,,,mine doesnt give me the code….elitebook 8470p…please assist

    17. Дж Ин

      5 March, 2016 at 2:55 pm

      It was only a request for assistance

    18. james p

      25 February, 2016 at 5:41 pm

      Hi could you help me with my bios password on a dell inspiron e1505 the numbers on the screen are #87zsp91-595b . I tried the box above but it did nothing . Thank you for your help

    19. Alex VN

      9 February, 2016 at 3:12 pm

      Hi toshiba portege m750-135
      Challenge code = YTEFN-ACEMD-C9ULD-WF1LU-XW3HD
      Réponse code =
      Thanks in advance
      Best regards

      Or if tout have URL or file for pwgen cause I had stop pc

    20. Papa Jay

      27 January, 2016 at 4:28 pm

      please can anyone help me to remove a bios password from my Hp Elite book
      8470p laptop

    21. Jeremy Ziller

      9 October, 2015 at 3:25 pm

      Yes I have a Toshiba satellite L455D-S5976 don’t know where to find the jumper for the bios password

    22. Łukasz Zawiślak

      6 October, 2015 at 11:33 pm

      hi Can u help me with bios reset password for Sony Vaio SVE1711T1E please:)

    23. john

      17 September, 2015 at 3:58 am

      hp pavilion x360 2in1 touchscreen.please I need administror or power on password

    24. amb

      19 August, 2015 at 9:42 am

      contact me on whatsapp +22996101920 or skypr: ston_100, mention the information you put here and you will have you unlock code. thanks

    25. Ambroise TESSI

      19 August, 2015 at 9:32 am

      hi I’m Ambroise TESSI, if you still need the bios pass code please contact me; whatsapp: +22996101920, skype: ston_100, or email at ston_100@live.fr I can help you

    26. Marco

      16 August, 2015 at 11:31 am

      i need dell latitude 5520 #DYBG5S1-1D3B. THX

    27. Chidam Baram

      8 July, 2015 at 6:27 pm

      i need fujisu ah530 bios password

    28. Alex

      27 June, 2015 at 11:04 pm

      please i need bios password for a Dell Latitude E6440 4V0ND12-1F66 thanks

    29. GJHGFHGH

      9 June, 2015 at 2:01 pm


    30. Giuann

      29 May, 2015 at 7:45 pm

      Hi!! i need Bios Password for a Sony Vaio, Service Tag:C606FUV6, S/N 27531163 5000080. Thanks for help.

    31. Dux

      16 May, 2015 at 9:36 am

      Help. Dell e6400. FY11M4J-1F5A

    32. RAY

      6 April, 2015 at 11:25 pm

      need bios password for dell latitude 3330 service tag 669FRT1 express ser code 13439343493, please help

    33. Nosipho Hlophe

      6 April, 2015 at 9:01 am

      Hello Guys

      Please hell i need a admin password for Dell Latitude D420

      service tag is : J6VBW2J

      express service code : 417-742-843-15

      the system number : J6VBW2J-595B

      Please help

    34. Kevin

      3 April, 2015 at 6:05 pm

      hi have the following problem notebook has a paswort’m not there more need a paswort he will not boot without this stupid password

      Model Name: Qosimo x300-13E

      Model NO: PQX32E-00J01WGR

    35. Andreas

      21 March, 2015 at 6:17 pm


      Help me please for the code please…

      My Phoenix SecureCore Tiano

      system locked = 6FCAAB2D


    36. Rick Springer

      7 March, 2015 at 1:44 am

      Samsung R540 system disabled [46268B710302288250]

    37. no1

      26 February, 2015 at 12:18 pm


      Do you know if it’s possible for dell 1D3B right now

      By the way i can access the OS, it’s Windows 7


    38. Nichole

      20 February, 2015 at 8:25 pm

      any ideas???

    39. Nichole

      20 February, 2015 at 8:25 pm

      I just posted before model CHK20X1

    40. Nichole

      20 February, 2015 at 8:24 pm

      I have a Dell Inspiron 15-3521 and getting 7F92B620D532A223. Locked out of BIOS and HDD passwords needed

    41. pillz

      19 February, 2015 at 5:22 am

      gateway model Q5WJC, help I need to bypass the bios password, please

    42. Martin

      17 February, 2015 at 2:59 pm

      anybody had Luck With HP Elitebook ?
      I have 8470p and need to reset BIOS password .
      Will it work to type password wrong 3 times and put the hashcode here?
      Will typing 3 times wrong make the Laptop not boot into Windows?

      • CC

        24 March, 2015 at 12:15 am

        I had to enter wrong password twice, and then, on the third try, instead, I hit F12 and got a number. But the code generator isn’t doing anything – not sure why, unless it’s this old XP box.

    43. ROBERTO

      16 February, 2015 at 9:16 pm

      I has a laptop dell latitude e6420 but bios blocked
      Help me unlock it please
      Code: 873PKQ1-1D3B

    44. Todd Harhager

      13 February, 2015 at 9:54 pm

      Hi I have a Toshiba L775-S7114 S# 4C174936R I have tried all the tools and still have BIOS Password. I need BIOS Password. Thanks.

    45. wudy

      9 February, 2015 at 8:57 pm

      Hello! Need help with Gateway NV52L laptop Bios password please! It have InsydeH2O Bios manufacture. And after trying typing 3 times wrong passwords it shows: System will halt! Cant do anything after that. Please help guys!!

    46. chris

      9 February, 2015 at 12:05 pm

      Hey we have a Problem with a Samsung NC 215. How can i delete the Bios Password?

    47. shaun

      7 February, 2015 at 5:21 pm

      need bios password for pakard bell easynote tk87-gn-051uk

    48. Nguyen Thomas

      6 February, 2015 at 9:03 am

      I has a laptop dell latitude e6320 but bios blocked
      Help me unlock it please
      Code: 7RZG1Q1-1D3B

    49. KARAOKE

      21 January, 2015 at 10:19 am

      Hi, ok I am hoping that reading your info you are the man to help me. I have a Windows 8 Samsung NP450R5E Laptop with bios password problem
      Hashcode produced after 3x enter :- 009AB0736C69D15E81
      I am asking for your help as your generator dosn’t seem to be working.
      Appreciate your time and effort

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