HP 15 bs DKL50 LA-E802P

[SI3MAR2000]

I think DIS GRF has a problem, I removed PLV1 and PLV2 and unsoldered PJW2 (dramrst) to disable dis grf, but no voltage on PLG1. Can anyone tell me this is a good method to convert (M.B: DKL50 LA-E802P Rev: 1.0) to uma

[Gian89]

Hi everyone - this board has been so resourceful for me! I didn't think I'd ever have to flash my BIOS, but here we are.

Model 15-bs143tu

S/N: CND8073FP0
ProdID: 3EV30PA#ABG
Board model number: DKL50 LA-E802P REV 1.0
BIOS chip: 25Q64JVSIQ

Perhaps I got lucky - perhaps the bin data isn't correct - but I struck gold on my first attempt with the CH314a programmer without the need to reseat, and attached is the saved data.

Really appreciate the support with this!

[hoaca388]

Hi everyone - this board has been so resourceful for me! I didn't think I'd ever have to flash my BIOS, but here we are.

Model 15-bs143tu

S/N: CND8073FP0
ProdID: 3EV30PA#ABG
Board model number: DKL50 LA-E802P REV 1.0
BIOS chip: 25Q64JVSIQ

Perhaps I got lucky - perhaps the bin data isn't correct - but I struck gold on my first attempt with the CH314a programmer without the need to reseat, and attached is the saved data.

Really appreciate the support with this!

HP Notebook - 15-bs143tu
BID _ 08328

[Gian89]

HP Notebook - 15-bs143tu
BID _ 08328

Thank you so much!! Now for the painful part..... reassembling this laptop where for the life of me, I don't understand why the BIOS chip is on the back of it!

I'm still overwhelmed by the support shown by users on this forum - it's honestly greatly appreciated. It's not much, but I've donated what I was able to part with Thanks again!

[mazloum]

hi every body , i have HP Notebook - 15-bs115dx

p/n= 3MP69UAR#ABA
S/N= CND8077FWR
15-BS115DX
black screen after bios update:
if please, can anybody help me

[mazloum]

there is something wrong happened during desolder, because i restored my old bios, but all i get is 5 long and 3 short badcaps, here is the picture if someone can determine what i have done incorrectly

[m1ch43lzm]

Try, BIOS extracted from HP website with serial/win key inserted

HP Notebook - 15-bs115dx

BIOS ver. F.75
BID 08328
S/N CND8077FWR
DMI 210000-21103F

[mazloum]

Try, BIOS extracted from HP website with serial/win key inserted

HP Notebook - 15-bs115dx

BIOS ver. F.75
BID 08328
S/N CND8077FWR
DMI 210000-21103F

thank you but i did already with the same capslock pattern

[m1ch43lzm]

there is something wrong happened during desolder, because i restored my old bios, but all i get is 5 long and 3 short badcaps, here is the picture if someone can determine what i have done incorrectly

You accidentally removed a resistor near the BIOS, 15 ohm, i marked it here

[mazloum]

You accidentally removed a resistor near the BIOS, 15 ohm, i marked it here

you are life saver, thank you very very much,

[valerio_vanni]

Hi everyone,

I have a notebook that is bricked after BIOS update. Windows UI part went fine, after reboot updating windows appeared (write and verify didn't show any error), but after automatic reboot the screen has always been off. External monitor too.
Win+B and Win+V with recovery bios on usb pen failed, nothing ever appears on monitor.

BIOS version that bricked: F.75 Rev.A 17 mag 2024
https://ftp.hp.com/pub/softpaq/sp153001-153500/sp153030.exe

Model: HP 15-bs199nl
ProdID: 3QS09EA#ABZ
SN: CND8105C1D

MB: DKL50 LA-E802P Rev: 1.0 2017-06-23

BIOS chip seems to be this:
AH1747
25864CSIG
E82456

I post also a picture, I'm not sure about CSIG or CS1G:
https://drive.google.com/file/d/1LAb...ew?usp=sharing
Is it a SOIC8 or other? Should I measure its size?

What tool do I need to read/write on it?
It seems that a clamp can be applied. I'm not able to desolder and resolder chips, I'd like to try with clamp and then if it doesn't work I will pay someone who is able to do it.

For BIOS backup:
Original drive is damaged but still accessible. I looked into C:\SWSETUP\SP153030\, but inside I only find an Insydeflash.exe. In temporary locations, nothing that resembles a bios backup.
In UEFI partition I find an HP\BIOS directory, with inside Current - New - Previous.
These have the date of failed flashing. I attach the 8 MB file from Previous folder.

[m1ch43lzm]

BIOS chip seems to be this:
AH1747
25864CSIG
E82456
...
What tool do I need to read/write on it?
It seems that a clamp can be applied. I'm not able to desolder and resolder chips, I'd like to try with clamp and then if it doesn't work I will pay someone who is able to do it.

BIOS chip model is GD25B64C (bee not eight), cheapest programmer available is CH341A, yes, SOIC8 clip which comes with most CH341 kits will work, but it may take some tries to attach it properly, sometimes those clips don't make a good connection

For BIOS backup:
Original drive is damaged but still accessible. I looked into C:\SWSETUP\SP153030\, but inside I only find an Insydeflash.exe. In temporary locations, nothing that resembles a bios backup.
In UEFI partition I find an HP\BIOS directory, with inside Current - New - Previous.
These have the date of failed flashing. I attach the 8 MB file from Previous folder.

Unfortunately that backup is incomplete, it's missing the S/N and the ME region, I assume the "New" folder is empty and the "Current" folder has the broken F.75 version (also without S/N or Win key)
Read the existing contents on the BIOS chip with the programmer once you buy it and attach it here

[valerio_vanni]

Yes, New is empty and I attach "Current".
So it failed also during backup?

Now I begin searching for tools.

[valerio_vanni]

BIOS chip model is GD25B64C (bee not eight), cheapest programmer available is CH341A, yes, SOIC8 clip which comes with most CH341 kits will work, but it may take some tries to attach it properly, sometimes those clips don't make a good connection

Unfortunately that backup is incomplete, it's missing the S/N and the ME region, I assume the "New" folder is empty and the "Current" folder has the broken F.75 version (also without S/N or Win key)
Read the existing contents on the BIOS chip with the programmer once you buy it and attach it here

Search is completed:

https://www.badcaps.net/forum/troubl...ng-programmer/

But not successful: the chip shows no data.

[m1ch43lzm]

Search is completed:

https://www.badcaps.net/forum/troubl...ng-programmer/

But not successful: the chip shows no data.

Since from your other thread the chip appears to be empty, you can flash the BIOS from post 167, or a clean BIOS (the one you have from "current" folder), post 173 and edit the serial/SKU/build ID/feature byte, etc with HP BCU

https://www.badcaps.net/forum/troubl...62#post3720362

HP BCU https://ftp.ext.hp.com/pub/caps-soft...it/HP_BCU.html

Serial Number :  CND8105C1D
SKU Number :  3QS09EA#ABZ
Product name: HP Laptop 15-bs1xx
Build ID: 17WW3J3T601#SABZ#DABZ
Feature byte: 3K3Q6b7B7K7P7WaBapaqasawbhbzcbdUdpdqfP.Q2
System family: HP Notebook
System board CT number: (On a sticker on the motherboard CT: )

[valerio_vanni]

How do I point HP BCU actions to bios file? I installed it, but it seems to point at BIOS configuration of machine.
Between switches I don't see any "apply to this bios file".

Or are you suggesting to flash file as is, and then run BCU on the affected machine when it will start?

Better my "current" or the one named "mazloum"?
About my "current", can I check its integrity? The SSD was faulty (could it be the reason of initial fail?)
About "mazloum": will I create any issue to that user, using that windows key? Will activation services detect hardware changes?

If mine is missing, I will search for some new. Don't want to steal someone else's one.

[m1ch43lzm]

Your "current" 08328.bin that you attached here is binary identical to the one extracted from HP website BIOS update F.75, I already compared it with WinMerge, it's clean, laptop will show "Manufacture Programming Mode is in Unlock mode" at boot
You run BCU on the "affected" laptop itself after booting Windows
Open command prompt as administrator

C:\SWSetup\SP143621>BiosConfigUtility64.exe /get:config.txt

Edit config.txt, then ill the data I mentioned above for S/N etc, save it and

C:\SWSetup\SP143621>BiosConfigUtility64.exe /set:config.txt

* Product name is "HP Laptop 15-bs1xx" (same for all, this is how HP programs it at factory)

As for the Win key, this may work, provided you can get the registry hives from the OS install on the failed drive
https://github.com/superfly-inc/showkeyplus/releases
What you're looking for is an OEM-DM Win key, you can add it with BCU under MS Digital Marker, it's in hex, like this:

010000000000000001000000000000001D000000(the win key converted to hex)

Example, if win key is ABCDE-FGHIJ-KLMNO-PQRST-UVWXY, use https://www.rapidtables.com/convert/...ii-to-hex.html to convert ASCII to hex

MS Digital Marker
010000000000000001000000000000001D00000041424344452D464748494A2D4B4C4D4E4F2D50515253542D5556575859

If you can't get the key, it's lost forever... Or grab one from a dead motherboard BIOS as long as it's from Win10/11 (old Win8 keys may not activate anymore), it's up to you

Don't change "Manufacturing Programming Mode" to *Lock yet, reboot and check all data is correct in BIOS, if everything is correct you can remove the asterisk from *Unlock and add it to *Lock, that message at boot will be gone

About using someone else's BIOS, the one I linked has MPM unlocked to change what you need with BCU, since most of it can be used as a template, and if you can get the OEM-DM key from the old OS install, edit it with hex editor before flashing the BIOS, then change the other values with BCU

[valerio_vanni]

Some update:

-I looked at the location 210000, there's nothing.
The good new is that I could recover Windows key from the failed disk.
How should I insert the code in config file? On two different lines like you did?

MS Digital Marker
01000000....

(this doubt since other parameters are "parameter : value")


-Now I've tried to flash original file (08328.bin) on chip, and I get an error during verification:

APP Version : 13.06 Model : T48 MFG:2025-07-25
Device : GD25B64C @SOIC8
Pins Detected Passed!
ID: 0x C8 40 17 ......OK!
Erase ...Succeeded. Time : 2.328 S
Data Protect Disable...OK!
Programming FLASH ...Succeeded. Time : 13156ms
Verifying FLASH ...Succeeded. Time : 2797ms
Programming STATUS/CFG ...Succeeded. Time : 0ms
Verifying STATUS/CFG ...
STATUS/CFG ERROR at: 0001 Buffer Value :0x02 --- IC Value : 0x3A
Verifying Succeeded. Time : 250ms
Programming ...Failed

I tried to read again the chip, and it extracts a file a bit different.
They are identical almost till the end, but then the extracted file has some data added that starts with "-Configuration-".


-I looked at the motherboard to search S/N: I find a sticker with MO: - SPS: - Date Code:, and not all numbers are readable.

Nothing with CT
There is a QR code (too little to be read).

On internal chassis I see
-a QR code on the black sticker (the one with notebook S/N, model etc)
-two other qr codes on a white stick (one "Build ID: 17WW3J3T601#SABZ#C" and one "Feature Byte: 3K3Q6b7B7K7P7WaBapaqasawbhbz Jdpdq".

[m1ch43lzm]

Some update:

-I looked at the location 210000, there's nothing.
The good new is that I could recover Windows key from the failed disk.
How should I insert the code in config file? On two different lines like you did?

MS Digital Marker
01000000....

(this doubt since other parameters are "parameter : value")

I used : to not make the post longer, when you run BCU /get:config.txt the parameters are all in a new line, and after a Tab
You have to grab the config.txt first as a template from the working laptop (after flashing BIOS and booting Windows), then edit it

Example from the laptop I'm posting from, after "Feature byte" on the next line there should be a Tab inserted (forum converted Tab to 5 spaces), paste the values I gave you after the Tab, make sure you don't have extra characters at the end of each line (no spaces or Tabs)

BIOSConfig 1.0
;
;     Originally created by BIOS Configuration Utility
;     Version: 4.0.32.1
;     Date="2025/10/29" Time="20:19:36" UTC="19"
;
;     Found 37 settings
;
Feature Byte
    3K6b7K7P7WaBapaqarawbCbhcbd8dUdpdqfPksm9.gT
Build ID
    19WW7AHT601#SUUF#DUUF
Serial Number
    5CG******
Product Name
    HP Laptop 14s-dk0xxx
....
.....
MS Digital Marker
    010000000000000001000000000000001D000000(win key in hex)

* MS Digital Marker may show as FFFFFFFFF......, replace it with 0100000000....

Only after everything is entered correctly, reboot, check again in BIOS setup, and BCU /get:config2.txt you can lock MPM

Manufacturing Programming Mode
    *Lock
    Unlock

After locking MPM, you can't change those values anymore, unless you start over with a clean BIOS (MPM unlocked)

-Now I've tried to flash original file (08328.bin) on chip, and I get an error during verification:

APP Version : 13.06 Model : T48 MFG:2025-07-25
Device : GD25B64C @SOIC8
Pins Detected Passed!
ID: 0x C8 40 17 ......OK!
Erase ...Succeeded. Time : 2.328 S
Data Protect Disable...OK!
Programming FLASH ...Succeeded. Time : 13156ms
Verifying FLASH ...Succeeded. Time : 2797ms
Programming STATUS/CFG ...Succeeded. Time : 0ms
Verifying STATUS/CFG ...
STATUS/CFG ERROR at: 0001 Buffer Value :0x02 --- IC Value : 0x3A
Verifying Succeeded. Time : 250ms
Programming ...Failed

I tried to read again the chip, and it extracts a file a bit different.
They are identical almost till the end, but then the extracted file has some data added that starts with "-Configuration-".

That -Configuration- thing is done by the T48 software, see the sticky https://www.badcaps.net/forum/troubl...ckup-file-size , it can be trimmed
What matters is that the BIOS contents are OK, about the STATUS reg error, should be fine, 0x3A just means LB3, LB2 and LB1 bits are = 1; that means the STATUS registers are read-only and can't be changed; what's important is that QE bit is set to 1

-I looked at the motherboard to search S/N: I find a sticker with MO: - SPS: - Date Code:, and not all numbers are readable.

Nothing with CT
There is a QR code (too little to be read).

CT Not really important, but use this if you can't find it: PGYEQB21VA2B67 ; should be on a long barcode sticker, unless it got damaged/removed, or just not placed (instead you have the sticker with SPS and MO)


Some boards from a Google image search don't have that sticker like in the picture..., I grab the CT: from that picture

On internal chassis I see
-a QR code on the black sticker (the one with notebook S/N, model etc)
-two other qr codes on a white stick (one "Build ID: 17WW3J3T601#SABZ#C" and one "Feature Byte: 3K3Q6b7B7K7P7WaBapaqasawbhbz Jdpdq".

Build ID and Feature Byte I grabbed from HP Partsurfer website, enter S/N and you get that data https://partsurfer.hp.com/?searchtext=CND8105C1D , for Feature byte remove the spaces and join the 2 lines, and Build ID is after "BID="
Should match what you have in the inside of the back cover, the values I gave you should work

[valerio_vanni]

That -Configuration- thing is done by the T48 software, see the sticky https://www.badcaps.net/forum/troubl...ckup-file-size , it can be trimmed
What matters is that the BIOS contents are OK, about the STATUS reg error, should be fine, 0x3A just means LB3, LB2 and LB1 bits are = 1; that means the STATUS registers are read-only and can't be changed; what's important is that QE bit is set to 1

I tried with "flash option" and the backup was identical.
I will remember for the future :-)

CT Not really important, but use this if you can't find it: PGYEQB21VA2B67 ; should be on a long barcode sticker, unless it got damaged/removed, or just not placed (instead you have the sticker with SPS and MO)

Build ID and Feature Byte I grabbed from HP Partsurfer website, enter S/N and you get that data https://partsurfer.hp.com/?searchtext=CND8105C1D , for Feature byte remove the spaces and join the 2 lines, and Build ID is after "BID="
Should match what you have in the inside of the back cover, the values I gave you should work

The inside of back cover? I forgot to look there, I will do it. My stickers were on the internal chassis (the metal layer below the motherboard).
What could be the reason of mismatch between partsurfer data and stickers' one?
That stickers are about something other? (like the internal chassis itself)

When you say that partsurfer's data "should work", what do you mean? How do I see if they don't work? BCU complains about it?

Before leaving home, I noticed a thing. Nothing to share with what we are talking about, but: the CR2032 socket is broken. I see that it has a low profile, under 4 mm. Just like in other notebooks, while in desktops it's much thicker. There is some standard for these measures?
Just to search... or I will search for a dead notebook.