Try our new boardview, bios, & schematic search. Over 1.3 million files for download!

Looking for information on flashing BIOS on Dell Windows laptops, so user can enter service tag at boot

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • chrome_dome
    Chromebook guy
    • Sep 2023
    • 3
    • United States
    • Computers, cooking, reading, outdoors

    #1

    Looking for information on flashing BIOS on Dell Windows laptops, so user can enter service tag at boot

    Hello all,

    I am looking into flashing the BIOS on Dell Windows laptops.

    The customers want these to boot to the dialog box that prompts the user to enter the Service Tag. On a new device, this would happen on the first boot.

    On older models, we could use a hex editor to blank out the old service tag and this would work. But modern Dell laptops do not allow this.

    We have BIOS from brand new boards, that we thought we could overwrite old BIOS with this fresh copy but that doesn't seem to work.

    Any advice would be greatly appreciated.

    Thanks in advance!
  • Tesla
    Senior Member
    • Jul 2011
    • 152
    • USA

    #2
    The Dell Service-Tag or rather yall mean the company's Asset Number.

    I've never seen Dell ship a computer to an end-user while still in Manufacturing Mode (not on purpose anyway). 😀

    And I've first-booted and did First-Time-Setup on plenty of Dells. They don't ask for Service-Tag (that's done at factory before shipping it out).

    https://www.badcaps.net/forum/troubl...l-motherboards

    Comment

    Related Topics

    Collapse

    • HTR-Informatique
      Dell G3 15 3500 - Battery bug (black screen and flashing keyboard backlight)
      by HTR-Informatique
      Hello,

      YouTube video of the problem encountered: https://youtube.com/shorts/q7TLNv36LUo

      I am a pro and I have a problem that I have never seen despite my 7.5 years of experience on my own and my thousands of repairs, on a customer's Dell G3 15 3500.

      On this PC I have already changed the complete palmrest because the keyboard was no longer working properly.

      I also changed the screen because the PC fell and the screen was broken.

      I changed the battery with a new and original battery.

      I also had corrosion/oxidation on the...
      02-09-2025, 06:51 AM
    • Deniz
      A2780 M2 Pro - No Boot, 140mA stuck, Fails to enter DFU (0.02A loop)
      by Deniz
      Hello everyone,

      Mainboard: 820-02890

      I'm working on a 16" M2 Pro (A2780) board with a complex boot/DFU issue. I would appreciate any guidance on the next steps.

      Symptoms & Behavior:
      • The board does not boot. Without the trackpad connected, it pulls up to ~500mA briefly, then drops and gets stuck around 140mA. Fans spin at max speed (expected due to missing thermal sensors).
      • External USB keyboard Caps Lock test fails (no light after 5 mins), confirming it's a boot-crash/kernel panic, not just a no-display issue.
      • Trackpad behavior: When I connect
      ...
      04-16-2026, 11:21 AM
    • adiko93
      Dell 5540 no boot after exiting manufacturing mode
      by adiko93
      Hey, im stuck with troubleshooting my Dell 5540 i7 vPro with 203032-1 motherboard. Every time i try to leave manufacturing mode it stops booting. I've tried clean ME Region clean BIOS but nothing really helps. Any help would be much appriciated

      Both chip dumps in attachments aswell as logs from MEInfo. I can't get the originnal bios to work, im only able to boot with clean BIOS

      I've tried to update the BIOS via Dell Update (it skipped ME Region saying it's up to date) with /forceit flag, that didn't help and im suspecting the issue might be somewhere else

      ...
      03-02-2026, 04:55 PM
    • Bowline
      Dell E6400 PT434 type Battery Charging Stuck at 1%. Battery Pinouts?
      by Bowline
      My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?

      Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?

      My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
      The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
      I have tried multiple different Dell power adapters. My Dell...
      06-11-2025, 10:13 AM
    • mpower1226
      Dell optiplex 7090 boot problem
      by mpower1226
      Hi masters, need your help in solving this mystery.

      i have a dell optiplex 7090 micro that i bought from local kijiji.

      when i turn it on, error comes out saying no hard disk.
      i go to bios to check the boot option, only httpboot shows. If i try to add boot option, it only shows file search but nothing happens when i click.

      i took out the ssd and put it into old laptop and format and installed the windows 10 and put it back into the desktop. It boots up and same error again no hard disk.
      it seems as if the computer doesnt recognize the ssd...
      01-22-2024, 10:37 PM
    • Loading...
    • No more items.
    Working...