HP 840 G8 Bios Unlock

[SMDFlea]

Hi All
I've been repairing this machine and bought a donor board for spares, unfortunately it turns out the original MB has a shorted cpu so is toast.
So now I'm trying to repair the donor, this has all the required voltages, no shorts or physical damage but won't boot, it flashes 5 power lights and the caps lock once, so generic hardware failure.
I've had something similar on another machine and that was bad joints on the EC chip, I've reflowed the EC chip on this board and it's no different.
My working theory is the EC chip bios is corrupted or the EC chip has failed and is preventing the board from starting up, would someone be able to take a look at these files and check for corruption and clean/remove passwords if possible, If this fixes it I'd need MPN enabling so I can change the details to match the original board.
My other question is could I transplant the bios chips from the original board?

Any help/advise would be greatly appreciated.

Type the laptop serial number, full name and model, motherboard model, etc.
read the forum rules..https://www.badcaps.net/forum/troubl...before-posting

[cannifixit]

Type the laptop serial number, full name and model, motherboard model, etc.
read the forum rules..https://www.badcaps.net/forum/troubl...before-posting

Sorry about that
HP Elitebook 840 G8
MB - 6050A3426501-MB-A02
I don't have the serial number of the board I'm trying to fix but the original was 5CG2120BGW

[Ghost18_07]

Hello Good caps, as always we need to remove BIOS password if possible, thanks in advance.
SN# 5CG3144L06

[nasirahmad53]

HP EliteBook 850 G8
SN : 5cg127909g
problem : me recovery error message show, when power on

[Ghost18_07]

Hello Good caps, as always we need to remove BIOS password if possible, thanks in advance.
SN# 5CG3144L06

Brand : HP
Mode l: Elitebook 840 G8
Board Number : 6050A3419601-MB-A01
Serial number : 5CG3144L06
Need: clear password.

[shiyab]

Hello Good caps, as always we need to remove BIOS password if possible, thanks in advance.
SN# 5CG3144L06

hi ec try

[nasirahmad53]

HP EliteBook 850 G8
SN : 5cg127909g
problem : me recovery error message show, when power on

need clear me

[dongspy06]

hello friends can you help me unlocked bios password heres the serial SN# 5CG3021TO1 thanks friends its and elitebook 840 g8 kudos!

[peste]

hello friends can you help me unlocked bios password heres the serial SN# 5CG3021TO1 thanks friends its and elitebook 840 g8 kudos!

post S/N, full name and model, motherboard model, product number,etc.
post the original contents of the bios chip..

[cannifixit]

Sorry about that
HP Elitebook 840 G8
MB - 6050A3426501-MB-A02
I don't have the serial number of the board I'm trying to fix but the original was 5CG2120BGW

Hi, I've managed to locate the serial number of the board I'm trying to repair in the Bios file, its 5CG21225BC, I'm hoping someone can help me here, I think the EC bios may be corrupt

[dongspy06]

post S/N, full name and model, motherboard model, product number,etc.
post the original contents of the bios chip..

heres the info sir hp elitebook 840 g8 sn# 5CG3021TO1

[trunguntilyou]

heres the info sir hp elitebook 840 g8 sn# 5CG3021TO1

Upload EC bios

[dongspy06]

HERES THE EC FILE SIR THANK YOU

[trunguntilyou]

HERES THE EC FILE SIR THANK YOU

This is the Main bios ,, please upload the remaining file ,,, I only know how to unpass with the remaining file

[dongspy06]

This is the Main bios ,, please upload the remaining file ,,, I only know how to unpass with the remaining file

ok sir this is the ec file.. hope you can help me thanks in advance