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BIOS Dell Lattitude 5420 main GDF40 LA-K491P rev: 2.0

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Dell Lattitude 5420 main GDF40 LA-K491P rev: 2.0
BIOS
Dell latitude 14 5420 Compal GDF40 LA-K491P Rev 0.3 BoardView.cad

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La-k491p.pdf


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1.13.1.bin.zip
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La-k491p.pdf
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I have a Dell Latitude 5420 (tested without HDD) and I’m running a diagnostic tool such as Aiken Workbench. The problem is that the tool detects the onboard LAN card, but it shows the message:


"no working driver for it"
and the test result is NO Driver.

Interestingly, when I install Windows, the LAN card works perfectly fine, which confirms that the hardware itself is okay. I have tried multiple cables and diagnostic environments, but the result is the same.


For comparison, I have a BIOS dump from a working unit and another from the problematic unit. The file sizes are identical. I suspect the issue might be related to a missing or corrupted PXE/UEFI network driver module in the firmware.


My questions:


  • Has anyone experienced this issue before?
  • What are the recommended steps to add the proper LAN driver to a diagnostic/WinPE environment, or to safely repair the firmware?
  • If no solution can be found, I would appreciate it if any expert who knows how to fix this fault could contact me privately to suggest the right approach.

Thank you in advance for your help.
 

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OK_204518_SVOD4.bin
32 MB · Views: 1

working fine.bin
32 MB · Views: 1

I have a Dell Latitude 5420 (tested without HDD) and I’m running a diagnostic tool such as Aiken Workbench. The problem is that the tool detects the onboard LAN card, but it shows the message:




Interestingly, when I install Windows, the LAN card works perfectly fine, which confirms that the hardware itself is okay. I have tried multiple cables and diagnostic environments, but the result is the same.


For comparison, I have a BIOS dump from a working unit and another from the problematic unit. The file sizes are identical. I suspect the issue might be related to a missing or corrupted PXE/UEFI network driver module in the firmware.


My questions:


  • Has anyone experienced this issue before?
  • What are the recommended steps to add the proper LAN driver to a diagnostic/WinPE environment, or to safely repair the firmware?
  • If no solution can be found, I would appreciate it if any expert who knows how to fix this fault could contact me privately to suggest the right approach.

Thank you in advance for your help.
you need i help what ?
 
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