FAQ ~ (forgotten) Dell BIOS Password

Discussion in 'BIOS Mods' started by Tito, Mar 18, 2013.

  1. Tito

    Tito Super Mod / Adviser
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    Nov 30, 2009
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    The BIOS Mods and Hardware sections of MDL is already cluttered with increasing number of threads requesting (forgotten) Dell BIOS password. As its a forum, everyone has the right to open a new thread but this trend leads to a forum full of junk!! So I have created this FAQ.


    A. If the last 4 letters of the Service Tag of your Dell laptop is 595B/D35B/2A7B/A95B

    1. Visit Dogbert's blog and follow the instructions.
    2. You can also use this web service (based on Dogbert's findings) by Вячеслав Бачериков.
    3. After entering the password, you might need to press CTRL+ENTER.
    4. If the above doesn't work, then you should follow Section C.

    B. If the last 4 letters of the Service Tag of your Dell laptop isn't 595B/D35B/2A7B/A95B (like 1F5A/3A7B/3A5B/1D3B etc.)

    1. You may try to do a forceful BIOS recovery. Read and search the forums for instructions. Some useful links are below.
    2. You may downgrade to a previous edition of the BIOS whose last 4 letters of the Service Tag is 595B/D35B/2A7B/A95B. Then follow Section A.

    C. Regardless of the last 4 letters of the Service Tag

    1. Chat with Dell Technical Support.
    2. Transfer the laptop ownership/warranty. This is also useful.

    You may get your (forgotten) HDD password as well by the above procedures. If you want to erase the HDD without knowing the actual password, you may try MHDD.

    **
    Some important notes by LatinMcG.
    For decompressing newer Dell UEFIs, see here.
    For Dell AMI Aptio recovery, see here.
    For Dell HDR method recovery, see here.


    Credits

    MDL Forum, specially LatinMcG & tqhoang.
     
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  2. Tito

    Tito Super Mod / Adviser
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    Thanks for making this sticky.

    :worthy:
     
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  3. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    dont forget the remove HDD when doing forced bios recovery is likely good idea to not lock HDD.

    dont forget to hold CTRL while pressing Enter

    all looks good.. tqhoang has a recovery hdr method in his sig.

    also if u search for schematics D630 for example u see name is BRISBANE .. so in HDR file find 3 letters of it for filename. ... find HDR in the HDR with hexeditor.

    keyboard difference will make a TOTAL DIFFERENCE!!
    QWERTY on top and AZERTY on bottom in picture

    View attachment 25004
     
  4. anarchist9027

    anarchist9027 MDL Expert

    Oct 30, 2010
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    Hopefully this stops the BIOS password "Ask & Runners"
     
  5. marcusbmco

    marcusbmco MDL Novice

    Apr 7, 2013
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    Okay,

    It's clear contained frustration is part of life w/ a computer...

    Got into the laptop (Dell 6510) and bios, been trying the bootable Ophcrack for the user pswd, tried Unetbootin, Universal boot, Iso to usb, formatting the usb as FAT, changing file names from isolinux to syslinux, always the same thing:

    SYSLINUX 3.85 2010-02-20 CBIOS Copyright (c) 1994-2010 H. Peter Anvin et al
    No DEFAULT or UI configuration directive found!
    boot:

    my Sonic cd rw doesn't work well, Im using an old Dell xp to make the usb... WHERE do I go from here ?????????????

    as always, Thankx in Advance!

    :confused:
     
  6. Tito

    Tito Super Mod / Adviser
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    Do you want to remove password of a Windows user account??
     
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  7. marcusbmco

    marcusbmco MDL Novice

    Apr 7, 2013
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    Ophcrack troubles...

    Yes. Change or remove.
     
  8. Tito

    Tito Super Mod / Adviser
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    Nov 30, 2009
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  9. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    i like to use active@ boot disk for x64 the ntpwd doesnt work ?.

    also if u have HDD password and need data ive used ZU.exe in dos to unlock some drives.

    mhdd needs to be 4.5 not 4.6 so u can run a script for WD brand hdd to read the hdd pwd.
    im not an expert at mhdd so dont ask me unless its WD
     
  10. Greatshalom

    Greatshalom MDL Novice

    May 25, 2013
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    pls, need help with Dell 610,
    Service tag: BQ2s42j
    code:###-213-971-47
    Pls help.
     
  11. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    cap all letters of your tag = one of these 3 (with a QWERTY type keyboard. u can use the equivallent with a comparison of non querty keystrokes..also press CTRL when pressing enter)

    1tgwq649
    z9cbug9x
    cqlz4C5mrJrTpQF4

    if not u have to upgrade or downgrade bios by recovery method.. what bios version is it ??

    recovery filenames
    AZED????BIN
    AZED????HDR
    AZED????HDC
    AZE?????BIN
    AZE?????HDR

    AZEDa03.hdr http://www.mediafire.com/?wpb55zdew72jli9 u can make your own with a CMD window and D610_A03.exe /writehdrfile
    put in usb stick fat32 and take battery out and power.. hold power button and END while inserting power cord now let go.. it should flash this A03.
    if no good then try different version A02 or A06
     
  12. momgone

    momgone MDL Novice

    Jun 6, 2013
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    Thanks for your suggestions, Tito. My anti-virus company tells me this is a hardware issue so I spoke with Dell. Dell denies any hardware problem (which would be covered under my warranty) and will not help without $239 software issue fee. I have completed A, B & C, but they have not solved my BIOS problem. I am still stuck looking for a BIOS password. Do you have any other suggestions?
     
  13. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    dell usualy helps with bios passwords if u prove youre the owner ( match their records of purchase). if they try to charge to remove a BIOS password, ask for a supervisor.
    i worked at dell small business support in 2006
     
  14. mikeymagnesium

    mikeymagnesium MDL Novice

    Jun 10, 2013
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    Can anyone please help me?:worthy: I've been trying for hours.:bangin: I got this Dell Vostro 3555 with a HDD lock and the BIOS settings are also password locked. I'm able to boot only to HDD which is weird considering it says it's PW locked, but then Windows is password locked too. I can't boot from disk even to remove that. I tried the key gens with no success and downloaded the BIOS from dell and tried to load the .ROM & .HDR on a USB, but didn't get any red light as all mentioned so no luck forcing BIOS downgrade flash also I'm not sure about what to name the HDR file. It won't boot from any USB or DVD even with HDD removed, not sure why that is. I'd be happy to get just the setup settings unlocked. The service tag is 79BFMP1 , Express service code 15800876965, HDD S/N A6101947 , WD HDD SN WD-WXH1A6101947. Thanks!
     
  15. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    new model... new algorithm so no generator works. ( unless u have the proper generator or $ to pay one of the few that have it on ebay)
    your service tag at the password screen has a -1D3B ?

    the hdd pwd maybe with ZU.exe (in hardware thread)
    the recovery likely is a wincris and .wph type with WIN B keys to initiate.
     
  16. mikeymagnesium

    mikeymagnesium MDL Novice

    Jun 10, 2013
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    My mistake the model is actually Vostro 3550. Since I updated to the latest A11 BIOS it shows the PW screen before it'll go into BIOS setup and it just shows the service tag, no suffix. The end key and power turned PC on and it seemed to search for file to flash, but I don't know what to name the file. Thanks very much for your info and help, I will give your suggestions a shot.
     
  17. Tito

    Tito Super Mod / Adviser
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    Nov 30, 2009
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    Vostro 3550 uses AMI EFI.

    See here for doing a forceful recovery.
     
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  18. mikeymagnesium

    mikeymagnesium MDL Novice

    Jun 10, 2013
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    I was following that, but I can't figure out what to name the .hdr file. Do you know? Thanks!
     
  19. Tito

    Tito Super Mod / Adviser
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    You need to use this to extract the rom from the bios installer. Then use this on the extracted rom to get the recovery name.
     
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  20. mikeymagnesium

    mikeymagnesium MDL Novice

    Jun 10, 2013
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    that tool made it easy to find the filename DN15A11.ROM. I tried (naming the extracted .rom , .hdr and .r00 files DN15A11 and placing in root on USB and HDD then held end and plugged in) but it just gave a black screen for a minute, accessed the drives briefly, but unfortunately then just booted normally without flashing. Can you suggest anything further to try? Thanks!