That's fine, finally we found what I needed, thanks! Please wait, let me see if I can figure out the issue and fix a BIOS for you.

Does this board have a single 32MB BIOS chip, or two 16MB BIOS chips? ME FW is same version between each dump you sent, but VERY different, which should be exact same, but I'll have to dig into that to see if it's just normal changes possibly or something corrupted.
EC FW is also different, which is normal between BIOS updates for this to change

* Edit - do you have two of these systems? If yes, please run MEINfoWin -verbose from V12 ME System tools package from here, and show me output (mainly the end is what we need to check)
See if Measured or Verified Boot is enabled on the left/FPF side, if it is then you cannot put in mod BIOS on this system so I cannot fix BIOS as that would be a mod BIOS - due to Intel BootGuard
Intel Management Engine: Drivers, Firmware & System Tools

If you only have one of these systems, program back in your old working BIOS and do the above. Actually, why don't you just do that now, and then update to the new latest version of this same BIOS from Dell (I linked above)

one chip 32mb
https://drive.google.com/file/d/11RZDKiW...iew?usp=sharing

Pls make clearme and bios ready to update. Thanks

Thanks. Sorry, I don't know what clear ME means, do you mean clean ME FW? If yes, that would already be done by Dell, unless you mean update and transfer setttings, if yes I can do that, if we can put mod BIOS on your board.
Let me check your ME Info. As mentioned, best way for you to do this is flash back your working BIOS, download the new Dell BIOS (not same one you used before), the one in link I posted at #12 and then update the normal way Dell has you update BIOS on this system.
Do not be worried, that is not same BIOS you used before, even though the actual BIOS version once you install it would be same (They used same version for three different builds)

* Edit, and I checked the MEINfo, thanks, good thing we checked. You cannot modify BIOS on this system (manually editing I mean), you can only flash Dell BIOS using Dell official method.
This BIOS has Intel BootGuard enabled (Measured + Verified), this is burned into the PCH chipset, and it's set to Profile 5 FVME = Immediate Shutdown upon boot of any single edited byte of the BIOS (However, this may only be last volume, I am not certain).
But, since you can boot and run first backup BIOS, there is no need to edit or modify any BIOS here, simply flash Dell stock BIOS in the normal manner to update to latest.
https://downloads.dell.com/FOLDER0572814..._3540_1.4.2.exe

Thanks for answer
When i am flash dell stock bios 1.4.2 i haved brick. LEd Blink 2 orange and 1 light

Plutomaniac Thanks, I didn't even notice [thumbs-up] << Thumbs-up smiley missing now Fernando added it to the package I believe

@DimDimuch - please program back your original working dump, not much can be done here in regards to trying to go stock, you can't use retail stock BIOS region and you can't use retail stock ME
I could update CPU microcodes for you probably, but that isn't going to help a whole lot, since you have ES CPU which probably only has an older microcode available.

Hi
When i am flashed bios from precision 3540 and updated bios with dell stock- laptop work fine but sound realteck is missing.
And what?
What you say above this?