HP PROBOOK 450 G8 DAX8QAMB8D0 REV : D Bios needed

[Vincovitch]

did you take off bios chipset from motherboard? Or are you using clamps? Is not a good idea to use clamps, you'll have errors. if you also use Ch341A do 3-4 readings and compare them, when you have 2 identical it means you have a good backup.

The BIOS is fine, but it's badly soldered on the board.
Here are the backups.

[volinakis]

The BIOS is fine, but it's badly soldered on the board.
Here are the backups.

try. Write only main bios.

[Vincovitch]

try. Write only main bios.

I just wrote the bios but the problem is the same as soon as I plug in the charger the fan starts running at full speed and the screen is black. Should I also write the EC?

[volinakis]

I just wrote the bios but the problem is the same as soon as I plug in the charger the fan starts running at full speed and the screen is black. Should I also write the EC?

try this EC. Count how many times charging led is blinking. And check soldering of bios chipsets.

[Vincovitch]

It flashes endlessly until the charger is removed.
I just found a faulty component that's extremely necessary. It's a PU9502 (G2898). I ordered it to see if that's the problem.

[ub6ib969]

Request: caps lock key on solid and power light flashes endless amber and white.
Device: Laptop Brand: HP EliteBook Model: 450 G8 product
id: 28K93UT
SN: 5CD1277CYV
MB: DAX8QAMB8D0 rev D

I have attached both bios rom and ec rom. thanks in advance.

[Vincovitch]

try this EC. Count how many times charging led is blinking. And check soldering of bios chipsets.

Hello, after changing the component the problem is still the same. I flashed the ec rom with the file you provided me above but it still doesn't work. Do you have any other idea?