HP Elitebook 840 G2

[peste]

Re: HP Elitebook 840 G2

Hello. Help is needed. There is HP 80 g2. I'm trying to remove the bios password through the programs - HPUnlocker, RCUnlocker_v_1_0.
But I'm getting flashing white and red light.
Help me please.

Try..if it doesn't work, try the original bios again and see what happens..

[Paul.Junge2020]

Re: HP Elitebook 840 G2

Try..if it doesn't work, try the original bios again and see what happens..

does not work. I did it with the original file - it doesn't work either ((( I don't know what happened

[peste]

Re: HP Elitebook 840 G2

does not work. I did it with the original file - it doesn't work either ((( I don't know what happened

well, what will happen!!!..you copied the original bios with errors...

[Vesko356]

Re: HP Elitebook 840 G2

well, what will happen!!!..you copied the original bios with errors...

Exactly. The importance of the good verified backup is mentioned many times, including in the sticky and FAQ threads, it will be a lesson for him to carefully read all the sticky threads hereafter.

When flashing a BIOS always make a backup first. Take 2 or 3 different dumps and make sure they are identical.
On Windows, you can use the command "fc /b" to check if two dumps are identical.
Make sure that the dumps looks good, i.e. not filled with 0x00 or 0xFF. After compression, if the file has a size of only a few kilobytes, the EEPROM was most likely not read properly.

Additionally, please read the FAQ at: https://www.badcaps.net/forum/showthread.php?t=98665

Common SPI bios chip programming Questions and Answers
----------------------------------------------------------



Q: How do i know if i`ve made a good backup or not ?.

A: One of the easiest ways is to make 2 backups,open both with a hex editor and use the
File-Compare option.Scroll through and make sure there`s some code in the backups.If both files
are all FF`s (empty) then you havn`t made a good backup or the chip is blank.Make multiple backups
making sure all connections are good and all programmer settings are correct.Double check,triple check !

[Paul.Junge2020]

Re: HP Elitebook 840 G2

I made 2 backup copies. Checked - they are identical.
I don't know, maybe I'm doing something wrong...

Can I find a replacement bios now?
Laptop with discrete graphics card.

hp 840 G2
SN: BCAM2109CTF570LERW
6070B0676404 REV 1.09 PDM:A02

[Lover1abd]

Re: HP Elitebook 840 G2

My problem is solved. Issue was the lazy soldering job. Also I will attach the image that worked for me. After reprogramming chip log in to bios as a guest user, surprisingly create an admin account, login to that account and delete existing accounts. Also remove the password for the admin. Voila!

Thanks for the original poster for the BIOS also I used Colibri as programmer. Thanks again for the poster of Colibri. It worked without any errors. I will attach that too.

After using this bin laptop work fine ,

But it's take around 20 seconds before hp logo comes up ,


Please any idea how to fix it please

This bin I used work but slow start up

[Vesko356]

Re: HP Elitebook 840 G2

After using this bin laptop work fine ,

But it's take around 20 seconds before hp logo comes up ,


Please any idea how to fix it please

This bin I used work but slow start up

>

[Lover1abd]

Re: HP Elitebook 840 G2

>

Works perfect, thanks

[Lover1abd]

Re: HP Elitebook 840 G2

Hi
Need bin for hp 840 g2
25q128fvsq

Please

Unlock

[SMDFlea]

Re: HP Elitebook 840 G2

Hi
Need bin for hp 840 g2
25q128fvsq

Please

Unlock

Please read the rules - https://www.badcaps.net/forum/showthread.php?t=103570

.

[shadow225]

Re: HP Elitebook 840 G2

hello!!!
can someone kindly unlock my hp840 g2

[SMDFlea]

Re: HP Elitebook 840 G2

hello!!!
can someone kindly unlock my hp840 g2

Havn`t you tried unlocking it yourself with RCUnlocker ? - https://www.badcaps.net/forum/showthread.php?t=103570

.

[shadow225]

Re: HP Elitebook 840 G2

i don't know how to
can you help me§

[SMDFlea]

Re: HP Elitebook 840 G2

i don't know how to
can you help me§

RCUnlocker https://www.badcaps.net/forum/showthread.php?t=98539

Usage: Drag and drop .bin file to .exe file.

[marcopollo63]

Re: HP Elitebook 840 G2

cmos battery was out.

What happens if you leave battery in?

Had you cmos battery out while reading?

What happens if not taken out? Also does this apply to all laptops?

[wm86698]

bro ineed 840 g2 tuch screen bios plz send me

[SMDFlea]

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

[TECHO TN]

Hello everybody
Hp elitebook 840 g2 turns off itself just after displaying the hp logo, in his MB there are two bios chips i tried to flash the main bios (16mo) many times with ezp2019 programmer but the problem is not solved.
I think it will be solved by flashing the second bios chip ! ! (2mo) but i dont find the file can you help me please
Serial number is joined in attachements
originals Bios are joined too

[SMDFlea]

Thread merged with existing topic. You must type as text the laptop serial number,don`t post pictures please !

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.

[TECHO TN]

Hello everybody
Hp elitebook 840 g2 turns off itself just after displaying the hp logo, in his MB there are two bios chips i tried to flash the main bios (16mo) many times with ezp2019 programmer but the problem is not solved.
I think it will be solved by flashing the second bios chip ! ! (2mo) but i dont find the file can you help me please
Serial number is joined in attachements
originals Bios are joined too

Serial: 5CG6070SRR
Model: A3009D510303

[shamaltech]

Anybody fix this bios?
Problem is laptop turning on but doesn't boot into windows.
Stuck on Windows logo.
Also cannot install any windows setup because when i boot from Windows bootable pendrive, it also stuck in Windows logo.

Elitebook 840 G2
S/N:5CG5250T25
CT:PEVEC00WB8S4XR

[shiyab]

Anybody fix this bios?
Problem is laptop turning on but doesn't boot into windows.
Stuck on Windows logo.
Also cannot install any windows setup because when i boot from Windows bootable pendrive, it also stuck in Windows logo.

Elitebook 840 G2
S/N:5CG5250T25
CT:PEVEC00WB8S4XR

HI try