Z book 17 g2 no display not turning on properly

[smohamad]

Hello there I have a Zbook 17 g2 with la-b391p
I lost the original bios.bin
I did install stupidly only once the main bios-chip backward then I changed the bios-chip with a new one
I don't know what is my me-version
And I don't know if I haven't DMI in bios .bin it brings failure or not?
I have only EC original .bin
I tried some bois files but after some blinking led's it goes on high-speed fan and no display
before my manipulation, it was working very well.
I don't know if I damaged some parts like PCH or it is just the bios has a problem
there is no specific schematic and boardview for this laptop but I found a similar schematic i uploaded it here maybe it helps
What should I do
I appreciate your help

[MOD EDIT] Link to schematic -> https://www.badcaps.net/forum/troubl...p-schematic

[mcplslg123]

All bios chips are not supported on a particualr platform. It'll be better if you share the original bios chip marking as well as the replacement chip.

[smohamad]

All bios chips are not supported on a particualr platform. It'll be better if you share the original bios chip marking as well as the replacement chip.

Tank you for your time
the original bios chip part no is 25q128fvsq and i replaced with 25q128fvsg

[mcplslg123]

The last character in the suffix is different. may matter or may not matter but better to replace with exact suffix. Q stands for QE-1 enabled in status register.

[smohamad]

The last character in the suffix is different. may matter or may not matter but better to replace with exact suffix. Q stands for QE-1 enabled in status register.

I can't find the exact same part number 25q128fvsq but i found chip with 25q128jvsq part number i don't know what is different between f and j

[mcplslg123]

Going by remarkes at the beginning of this post, it still seems like abios/bios chip issue. Download hp bios update from hp website and extract the bios and try flashing them one by one. That way you can rule out bios issue. You need to try all the bios extracted from hp update as original bios data is not available-else you could have matched the BID.Suffix "J" wont support.

[mon2]

From a quick glance, the parts look to be the same except that J suffix is automotive grade so can support higher temperatures than F grade.

[smohamad]

Going by remarkes at the beginning of this post, it still seems like abios/bios chip issue. Download hp bios update from hp website and extract the bios and try flashing them one by one. That way you can rule out bios issue. You need to try all the bios extracted from hp update as original bios data is not available-else you could have matched the BID.Suffix "J" wont support.

I tried that but there was one bin file not more i don't know i extracted right or wrong 🤔

[smohamad]

From a quick glance, the parts look to be the same except that J suffix is automotive grade so can support higher temperatures than F grade.

Tnx do you think i should try j part with qe=1?
25q128jvsq

[mon2]

Yes, test with QE=1. This is QUAD SPI mode and is faster to boot the firmware embedded inside this bios IC. It should work but if it does not, test with QE=0 (QUAD SPI will be DISABLED).

[smohamad]

Tnx to all of you my laptop is working now but i have dmi issue now i need to unlock mpm to edit dmi