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  • How to Reset a Dell BIOS Password



    To discover a working BIOS password for your Dell, enter the Service Tag from your Dell into our password generator tool. The Service Tag will be documented on a small sticker on the bottom, back, or side of your Dell PC. The Service Tag is a 7 digit identifier that is unique to your Dell. The Service Tag is different from the 10 digit Express Service Code. The Dell web site also has a tool to automatically detect your Service Tag.

    Dell BIOS Password Generator Tool

    Dell Dimension BIOS Password Recovery

    The BIOS password may be cleared from a Dell Dimension by moving the password jumper on the motherboard.

    The password jumper’s location on a Dell Dimension motherboard can be found by reviewing the Dimension User Guides.

    For most Dell Dimension desktops, the steps to reset a BIOS password and clear all CMOS settings are:

    • Locate the 3-pin CMOS password reset jumper on the system board.
    • Remove the jumper plug from pins 1 and 2.
    • Place the jumper plug on pins 2 and 3 and wait approximately 5 seconds.
    • Replace the jumper plug on pins 1 and 2.

    Dell jumpers

    Dell Optiplex BIOS Password Recovery

    The BIOS password may be cleared from a Dell Optiplex by removing the password jumper (PSWD) from the motherboard.

    The password jumper’s location on a Dell Optiplex motherboard can be found by reviewing the Optiplex User Guides.

    For most Dell Optiplex desktops, the steps to reset a BIOS password and clear all CMOS settings are:

    • Locate the 3-pin CMOS password reset jumper on the system board.
    • Remove the jumper plug from pins 1 and 2.
    • Place the jumper plug on pins 2 and 3 and wait approximately 5 seconds.
    • Replace the jumper plug on pins 1 and 2.

    Dell Inspiron BIOS Password Recovery

    Each Dell Inspiron has a master password that clears the BIOS password. Call Dell Technical Support at (800)624-9896 to get this number.

    Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Inspiron.

    If the current user is not the original Inspiron owner, Dell will transfer the used Inspiron’s registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.

    To transfer a used Dell Inspiron’s registration, fill out the Transfer of Ownership form on Dell’s web site.

    Dell Latitude BIOS Password Recovery

    Christophe Grenier wrote a program that calculates the master BIOS password for Dell Latitudes from the Service Tag number. That program is available here.

    If a Latitude cannot be booted to run this program, call Dell Technical Support at (800)624-9896 to get the working password.

    Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Latitude.

    If the current user is not the original Latitude owner, Dell will transfer the used Latitude’s registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.

    To transfer a used Dell Latitude’s registration, fill out the Transfer of Ownership form on Dell’s web site.

    Related Reading on BIOS Password:

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

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    3076 comments
    1. Adrian

      6 June, 2017 at 2:07 pm

      Sir, please help for unlock pass bios.
      Dell latitude E6510
      5FRM0P1-2A7B

      Reply
    2. Shavekia Garrett

      27 May, 2017 at 9:00 pm

      Hello I’ve tried the passwords that it gave me but none of them worked.
      I’m working with a Dell Latitude E6540
      It’s not disabled just asking for the password.
      B4W1J72-1F66
      Service Tag is B4W1J72

      Reply
    3. Sander

      27 May, 2017 at 2:32 am

      I get difficult email and redirected here, rackembilly say i need to have tech support, they wont help me i have no proof its my laptop now. ok thanks anyway, difficult i understand

      Reply
    4. Scott

      22 May, 2017 at 10:29 am

      Please help me I have a Dell Venue 10 pro 5056 #GK09682-6FF1

      THANKS!

      Reply
    5. Jhon

      20 May, 2017 at 3:44 pm

      Sir, please help for unlock pass bios.
      Dell latitude E5410
      5FP13N1-2A7B

      Reply
    6. Arek

      18 May, 2017 at 2:33 pm

      Please help me with password administrator.
      Dell Latitude E5420
      Service tag: HZQQBT1-1D3B

      Reply
    7. Johnny Peebles

      18 May, 2017 at 12:36 am

      My sister changed my password and now I’m locked out. The laptop is a Dell Insipiron 15 3521.

      This is the info in the box when it is locked…

      System Disable [ 0F6C65F6DF91C8FF ]

      Service Tag 1CXFQY1

      Reply
    8. BoxRockr

      16 May, 2017 at 8:06 pm

      System Disabled [85BECEB16289C93A2] Service Tag [C03VGV1] Bios password locked please help

      Reply
    9. Stig Friis

      13 May, 2017 at 5:29 pm

      Hello. I cant get acces til Adm password to my Delle Latitude E5430. Service tac 9YZZ9W1. Can anybody help

      Reply
    10. serg

      13 May, 2017 at 9:32 am

      System disable [A4A90F3F3A82443A]
      DELL INSPIRON 7520
      SERVICE TAG 3DF4FW1

      please help

      Reply
    11. Graciela Flores

      9 May, 2017 at 9:03 pm

      NEED BIOS PASSWORD FOR 42BGRH1-1F5A

      Reply
    12. john

      9 May, 2017 at 12:50 pm

      i have dell latitude E6420 & i forgot the Bios password please can you help me out
      service tag #8CT77R1

      Reply
    13. Mathew

      7 May, 2017 at 4:14 pm

      Dell Inspiron 1501 I owned this from day 1. An hour with Dell customer service was no help. No master bios passwords work. Removed the cmos battery for an hr. Still unable to get into the setup utility. PhoenixBIOS Revision 2.6.3 Im out of ideas. Service tag HJPF1D1

      Reply
    14. MOAMEN

      7 May, 2017 at 1:04 pm

      Dell from hdd serial number (old) nnnnnonn
      Dell from serial number E8Z0M03UOc04CiT8
      Dell from hdd serial number (new)
      mjnyfc5m
      i6w2s311
      lX0N4vRNuq0XU02k
      8v84fc9b
      6TvkR8PJoABL29L1

      Reply
    15. LEON

      3 May, 2017 at 4:02 pm

      DELL LATITUDE E4310
      Bios Admin Password
      TAG: 9D9VTM1-1F5A
      Please!

      Reply
    16. Mike

      3 May, 2017 at 1:51 am

      Dell Latitude E7450 Dell Security Manager screen pops up and needs password my service number is H9TSR32 PLEASE providde password. This is why I will never purchase a laptop from craigslist, letgo, or any of those sites again.

      Reply
    17. Alan Jackson

      30 April, 2017 at 4:17 am

      Dell n5110 Admin Bios password needed will boot Windows fine but set up is locked please help

      Reply
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