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I have 3 more computers with the same problem, password
I would appreciate it very much if you can help me
HP 440 g9
board DAX8SFMB8B1 REV : B
1. serial 5CD3134KQC
2. serial 5CD334M4L2
3. serial 5CD334M524Leave a comment:
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Can you please help me remove the password from this computer, thank you
HP 440 g9
board DAX8SFMB8B1 REV: B
serial 5CD334M4M0
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MODEL : HP 640-G9
Part no : DAX8SFMB8B2 REV B
SN: 5CD32081Q8
problem: this laptop working fine but ( HP LOGO ) NOT present ill attached the image and bios file spi
please anyone remove this logo pleaseAttached FilesLeave a comment:
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first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
use BCU. you can permanently disable Absolute lock in BCU.
here's your DMI:
Serial Number: 5CD211HLKX
Product #/SKU: 579Y9LT#ABM
CT Number: PQFKC028JGDMET
Description: HP ProBook 450 G8 Notebook P
BuildID: 20WWR3FT601#SABM#DABM
Feature Byte: 3X476J6S6b7B7J7M7Q7W7m7saBapaqauawbUbhcAdUdpdqfPguk8mEn7nV.Ge
MAC Address : A8:B1:3B:7F:F8:F3Leave a comment:
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please remove bios password, 2 bin files inside and for 2 laptop same iisues
please remove bios password
hp1
dax8sfmb81
serial 5CD311L19Z
HP PROBOOK 440 G9
hp2
PLEASE REMOVE BIOS PW
SERIAL # 5CD311L1QJ
HP PROBOOK 440 G9
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first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
use BCU. you can permanently disable Absolute lock in BCU.
here's your DMI:
Serial Number: 5CD311L1QJ
Product #/SKU: 7A4X1PA#UUF
CT Number: PQNNH028JHUXR8
Description: HP ProBook 440 14 inch G9 Notebook
BuildID: 22WWRTDT601#SUUF#DUUF
Feature Byte: 476J6S6b7B7J7M7Q7W7saBapaqauawbUbhcAdpdqfPguk8mEn7nVpTpqqjqzr2r3.e3
Leave a comment:
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first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
use BCU. you can permanently disable Absolute lock in BCU.
here's your DMI:
Serial Number: 5CD311L19Z
Product #/SKU: 7A4X1PA#UUF
CT Number: PQNNH028JHUQP4
Description: HP ProBook 440 14 inch G9 Notebook
BuildID: 22WWRTDT601#SUUF#DUUF
Feature Byte: 476J6S6b7B7J7M7Q7W7saBapaqauawbUbhcAdpdqfPguk8mEn7nVpTpqqjqzr2r3.e3
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Hp Probook 450 G7 s# SCD0348W35 had a locked BIOS. Bought BIOS and EC chips off Ebay that were supposed to match this machine - the 450 G7. Flashed in the BIOS on chip i bought using a CH341. BIOS unlocked next boot. Some error to contact HP. Entered BIOS and reset to system defaults and rebooted. Machine worked fine but every cold boot the contact HP message popped and everything else worked as fine. Assumed the error was from EC chip not matching BIOS that i just flashed in. So i flashed in the EC that was supposed to match from the EBay chip i bought and instant brick.
Ive got...07-08-2025, 09:24 PM -
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 -
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.
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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... -
I'm requesting a bios .bin for 2 of my hp Probook 450 G3's. Both of which I had forgotten the bios passwords. I stupidly flashed both of them with firmware "made" by the RCUnlocker software and I guess I shouldn't have. The last thing I did was flash both of them with RCUnlocker-fw thinking it would 100% work and left my programmer etc behind and won't have access to them for another 2 days so I figured I'd create a thread to see if I'd be so lucky that someone might have a working file laying around 😝
Laptop number 1:
Model: HP ProBook 450 G3
Motherboard part number:... -
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...
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