Dell Latitude 5420 - Faulty BIOS Image

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

same issue , look at the video joined

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

does not work always turn on , light without display , 6 white 3 orange on power led

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

Try this file and see what happens next.

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

always hang on dell logo , 6 white 3 orange on power led , fan not working

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

Try two files again

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

CML : turn on few seconds then off without display
TGL : turn on then hung on light without display (no dell logo)
i have never encounter this strange issue !

[SMDFlea]

Re: Dell Latitude 5420 - Faulty BIOS Image

CML : turn on few seconds then off without display
TGL : turn on then hung on light without display (no dell logo)
i have never encounter this strange issue !

CML is Comet lake, TGL is tiger lake. Your CPU is a tiger lake U .The laptop is still under warranty by the way: ProSupport Flex ,Expires 25 JUN 2024

[Maxpower3]

Re: Dell Latitude 5420 - Faulty BIOS Image

Try again

Please help with serial number
Test with this bios ok but bad serial number

need serial BYDN2F3 (no power with original bios 5volt only on USB C)
---------------------------------
EDIT PROBLEM SOLVED

NO SERIAL WITH THIS BIOS
Main_32mb hung on dell logo
-----------------------------------

[hani55]

Re: Dell Latitude 5420 - Faulty BIOS Image

Can my friends help me fix the BIOS file that is not displaying?

DELL LATITUDE 5420
SV 94NHDK3

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

can my friends help me fix the bios file that is not displaying?

dell latitude 5420
sv 94nhdk3

dell latitude 5420
sv 94nhdk3

[hani55]

Re: Dell Latitude 5420 - Faulty BIOS Image

dell latitude 5420
sv 94nhdk3

working Latitude_5420TGL but password bios

thank you very much brother

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

working Latitude_5420TGL but password bios

thank you very much brother

Unlocked

[hani55]

Re: Dell Latitude 5420 - Faulty BIOS Image

Unlocked

thank you brother working 100/100

[SHONE984]

Hello. I have a very strange problem with the bios file. After deleting it and trying to enter the same file again, the laptop does not start and remains at 5v. I tried with another bios chip XMC from another laptop and I get 19v but now the display changes colors. then I tried to read the same XMc chip to erase and load the same file, but now with the same file I get 5v. please help

[BGinvestments]

Can anyone help me? I bought a
Dell Latitude 5420
ST:1DV95M3
Board:GDF40 LA-K491P REV3.0(A02)
It came with an XMC chip that I was forced to change because I needed it for another machine, but I made a backup of the BIOS, then I tried to put in a Winbound chip and it worked but it took a long time to turn on and it didn't recognize the SSDs, quite strange, I got another XMC chip and oh surprise now it was giving me colored screens, as if I had a corrupted ME, but if I try to clean the ME region it only gives me a black screen and 3 amber blinks and 6 white ones, I have tried many different clean BIOS Files even ones from this post and the same result always. Sometimes it shows the logo and the same lights, I have no idea what to do, this is the backup of the BIOS that was initially working and now it gives me colored screens. but if I try to clean the ME region it only gives me the error lights mentioned above.

[hoaca388]

Can anyone help me? I bought a
Dell Latitude 5420
ST:1DV95M3
Board:GDF40 LA-K491P REV3.0(A02)
It came with an XMC chip that I was forced to change because I needed it for another machine, but I made a backup of the BIOS, then I tried to put in a Winbound chip and it worked but it took a long time to turn on and it didn't recognize the SSDs, quite strange, I got another XMC chip and oh surprise now it was giving me colored screens, as if I had a corrupted ME, but if I try to clean the ME region it only gives me a black screen and 3 amber blinks and 6 white ones, I have tried many different clean BIOS Files even ones from this post and the same result always. Sometimes it shows the logo and the same lights, I have no idea what to do, this is the backup of the BIOS that was initially working and now it gives me colored screens. but if I try to clean the ME region it only gives me the error lights mentioned above.

Flash chips in VSCC table:

EF4019 (Winbond W25Q256)

C84019 (GigaDevice GD25x256C)

204019 (Micron XM25QH256C)

C24019 (Unknown 00C24019h)

Are you using the correct chip model ?

[BGinvestments]

Flash chips in VSCC table:

EF4019 (Winbond W25Q256)

C84019 (GigaDevice GD25x256C)

204019 (Micron XM25QH256C)

C24019 (Unknown 00C24019h)

Are you using the correct chip model ?

The problem started when I changed the chip, so I think I will order exactly the XMC chip that I had originally, xmc 25rh256cxiq. THANK YOU VERY MUCH. I didn't think there would be a problem when changing the chip.

[Doelekkerzelfdevaat]

Re: Dell Latitude 5420 - Faulty BIOS Image



Try this file again

Thank you so much! This file was my life saver. I was out of options and recalled I saw this forum. Now the laptop is working again. Funny thing is that I had the exact same boot loop problem with my image. This one works (except for an diagnostic error on the network adapter - but the adapter does work in Windows 11).
Thanks again!!

[a5hek]

Hi everyone, I believe I have a faulty bios chip. The original XM25RH256C chip kept on giving different readings every time. I have another chip W25Q256 and tried but laptop wont power on at all. I tried to open the image with Intel FIT but it is giving an error as was ME analyzer. I have attached the faulty image if some can repair it or make a new bios. The laptop has a blue Intel i5 sticker so I believe it is tiger lake. Thanks
Latitude 5420
ST:J820FK3