Hp 800 G4 locked bios

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • thesame
    Senior Member
    • Mar 2018
    • 141
    • 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
    Tags: None
    • SMDFlea
      Super Moderator
      • Jan 2018
      • 21841
      • 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

        Previous template Next

        Related Topics

        Collapse
        • to5it0
          Need Clean BIOS/EC Bin File for Lenovo ThinkPad Yoga 11e 2H1703-27220F Rev. A Marked as U2501 on the motherboard.
          by to5it0
          Need Clean BIOS/EC Bin File for Lenovo ThinkPad Yoga 11e - Stuck with 0275 Error CMS

          Hello everyone,

          I am attempting a repair on a Lenovo ThinkPad Yoga 11e that is currently stuck at boot with the error: "0275 error CMS" even after setup new bios battery and will not allow me to enter the BIOS/Setup.

          This is a critical issue that I believe requires flashing the BIOS chip directly using a programmer (e.g., CH341A/RT809H), as standard software updates or resets are not possible.

          I have opened the laptop and identified the main BIOS chip...
          2 Photos
          10-24-2025, 01:35 AM
        • 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
        • 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...