bios for hp PROBOOK 455 G8

[hoaca388]

Thanks for the help., @rex98 & @hoaca388., Now I simply am puzzled. @rex98 you are saying not to touch the EC Rom where as @hoaca388 gave me a updated copy of EC Rom. Kindly inform me what to program back again. The Main SPI ROM or the EC Rom??? Get me out of this confusion. Thanks dear.

There are 2 ways to unlock this model: via bios or via EC.

[mferna14]

Thanks for the help @hoaca388., Your EC update worked 100% fine, no problems at all. I did not try @rex98 as I had to reprogram the main BIOS again & would be a longer process. Anyway GREAT help both of you guys.

[anonym277]

Hello guys i tried to read my EC from my HP 455 G8 with the CH341A Programmer but on my pc and the ch341A programm i couldnt find the chip Winbond 25Q256JVEN ?

[peste]

Hello guys i tried to read my EC from my HP 455 G8 with the CH341A Programmer but on my pc and the ch341A programm i couldnt find the chip Winbond 25Q256JVEN ?

try..
https://www.badcaps.net/forum/showpo...6&postcount=10
https://www.badcaps.net/forum/showpo...04&postcount=7

[anonym277]

try..
https://www.badcaps.net/forum/showpo...6&postcount=10
https://www.badcaps.net/forum/showpo...04&postcount=7

Thank you, i found the chip with the AS Programmer. But it seems like i cant read the chip via the clipper or do i make something wrong?

[hoaca388]

Thank you, i found the chip with the AS Programmer. But it seems like i cant read the chip via the clipper or do i make something wrong?

You used the wrong tool, with WSON chip you have to use this.

https://shopee.vn/Bigdealsnice-Sop8-...2-4f563c2c4430

[Japanac]

HP ProoBook 455 G8Mainboard
DA0X9QMB8E0 Rev: E
Hello can anybody repair this bios, please it turns on but there is no image on the screen, the fan is spinning at high speed

[peste]

HP ProoBook 455 G8 Hello can anybody repair this bios, please it turns on but there is no image on the screen, the fan is spinning at high speed

post the S/N, the motherboard model, etc.

[Japanac]

DA0X9QMB8E0 Rev: E S/N 5CD149CPTW
32N01EA

[DNL]

Hello everyone. Can you please help me? I have a black screen, and the fan is running at full speed.

Here are the details:
HP PROBOOK 455 G8
ProID: 1Y9H0AV
SN: 5CD1303620
RMN: HSN-Q31C-5
DA0X9QMB8D0 Rev D

I have attached the BIOS and EC files.

Thanks in advance!

[hirens]

hello guys . i have a machine , fun runs at max speed and there's no display.
details
HP pro book 455 G8
S/N:5CD2064Y24
pro ID: 1Y9H0AV
DA0X9QMB8E0 rev:E
attached are my files

[volinakis]

hello guys . i have a machine , fun runs at max speed and there's no display.
details
HP pro book 455 G8
S/N:5CD2064Y24
pro ID: 1Y9H0AV
DA0X9QMB8E0 rev:E
attached are my files

try this one (main bios) and if it works write DMI with BCU. You'll find values on a label of bottom case or in your bios starting with hex adress: 107A730

[hirens]

try this one (main bios) and if it works write DMI with BCU. You'll find values on a label of bottom case or in your bios starting with hex adress: 107A730

capslock just blinks 5 times then fun runs at high speed no stop but no display

[warsztat]

Hi, unlock bios please,
HP Probook 455 G8 DA0X9QMB8E0 REV:E
ProdID 1Y9H0AV
sn: # 5CD2132DKQ

dump EC_BIOS

[hoaca388]

Hi, unlock bios please,
HP Probook 455 G8 DA0X9QMB8E0 REV:E
ProdID 1Y9H0AV
sn: # 5CD2132DKQ

dump EC_BIOS

Unlocked

[warsztat]

Unlocked

Thank You