hp elitebook 840 G8 dont come on

[Hachem25]

i have this hp elitebook 840 G8 mb corvette 6050a3217501-mb-a01
after flashing a bios ( u366) it does not comes on. when i press power button the lockscap key blinks 7 times. it does not take more than 4ma . i tried resouldering the bios . also i tried flashing another bios but nothing changed.
if someone can help me with this. thank you

[ash91]

Try romove the ram and star the laptop with out ram memory see if any changes done
is the laptop has an ec chip (the io memory chip) if yes you need to flash it too
if no you need a working bios with the same cpu as your laptop

[Hachem25]

i did all this, i even put replaced the bios chip.
i think im missing 2 tiny resistors, but im not sure

[markownik]

I have one working board and two other with fried CPUs, which place do you need measured/checked?

[Hachem25]

the area around the bios chip on back of the cpu please. if you can take a close picture of the components near it . i think i knoked some resistores there. thank you

[chocouy]

I have one working board and two other with fried CPUs, which place do you need measured/checked?

hi can you measure these components that I am missing and maybe some others that I have missed. I have been looking for a schematic where I can cross reference this BIOS chip but couldn't find any online so the only hope now is to find a working board which is not possible for me as of now. would greatly appreciate it.

this is the BIOS chip from the back near the EC chip.

[Hachem25]

i have the same probleme here . i think im missing 2 components.