Hp 800 G4 locked bios

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • thesame
    Senior Member
    • Mar 2018
    • 121
    • Romania

    #1

    Hp 800 G4 locked bios

    Hy, I have this password protected sff from hp, motherboard model F81 DA0F81MB6A0 Rev A and the board has two ic's I have tryed reading the sop8 one marked XU68 PRVROM and I have used hp unlocker on the bin and writed back the unlocked bin to the IC but the password is still there. Do I have to read the other IC SOP 16 marked XU21 BIOS?
    Attached Files
  • SMDFlea
    Super Moderator
    • Jan 2018
    • 20795
    • UK

    #2
    RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
    https://www.badcaps.net/forum/troubl...before-posting

    You MUST:
    • Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.
    • Provide a BIOS/EC dump if possible
    • Attach files directly to your post instead of linking to external websites
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

    Related Topics

    Collapse

    • macabook
      🛠️ MSI GP75 Leopard MS-17E71 – No Display, Deep BIOS/EC Troubleshooting
      by macabook
      Hello everyone,

      I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
      🧩 Initial Issue
      • Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
      • External display (HDMI) shows
      ...
      07-24-2025, 02:17 PM
    • dr_crx
      Dell 7740 Bios locked J3JSD43-8FC8
      by dr_crx
      Hello i need help please
      i have DELL 7740 ST: J3JSD43-8FC8
      i tried to read bios bit i think it is wrong because the size of the file is around 1mb
      anyone can help to show its location on motherboard please.
      i attached the results file the IC i read is : winbond 25q80dvsig
      i don't know if its the needed bios or another bios on the motherboard.
      thank you in advanced for your help...
      07-11-2025, 12:22 AM
    • Vesko356
      [Guide] How to find the right HP bios version to flash
      by Vesko356
      First of all thanks to all of our members who have posted previously all methods posted here.
      Please leave a comment if you find something new,or have anything else to add.
      -----------------------------------------------------------------------------------------

      Find by serial number,model number or series

      If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
      Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
      Operating system and OS version.If...
      08-11-2023, 03:27 AM
    • fulaphex
      Lenovo Thinkpad X13 Gen 3 AMD locked bios
      by fulaphex
      hello friends - I have purchased a used Thinkpad X13 Gen 3 AMD variant and only after making the purchase I realised that the BIOS is locked. I have spent a bit of time browsing the forum and from what I understand it's possible the modify the BIOS that is currently on the machine and remove the password from that BIOS. For dumping the BIOS from the laptop I have ordered this ch341a programmer. Below is a photo of the password prompt:


      I have taken the cover off the laptop and I found that "serial number" is "GM-0358MB" and "type number" is "21CN-S19U00"....
      07-09-2025, 07:04 PM
    • jbonavita
      ASUS TP500LA BIOS request/repair/merge?
      by jbonavita
      Hi, my laptop wont boot at all
      With original bios no POST, only LED lights
      With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
      Some issues
      A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
      B- If updated from 500LN version 203 to 300, the battery stops being recognized

      Things I tried

      1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble...
      04-29-2025, 09:38 PM
    • Loading...
    • No more items.
    Working...