Dell Latitude 5420 - Faulty BIOS Image

[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

[hani55]

Re: Dell Latitude 5420 - Faulty BIOS Image

Unlocked

thank you brother working 100/100

[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

dell latitude 5420
sv 94nhdk3

working Latitude_5420TGL but password bios

thank you very much brother

[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

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

DELL LATITUDE 5420
SV 94NHDK3

[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
-----------------------------------

[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

[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 !

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

Try two files again

[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 this file and see what happens next.

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

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

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

same issue , look at the video joined

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

does not work also , same result

Latitude 5420
Service Tag: 7ZHG1F3

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

does not work also , same result

[anhbanxoi]

Re: Dell Latitude 5420 - Faulty BIOS Image

ook , thank you very much , im waiting

Try this file and feedback. You should be able to modify the service tag.

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

ook , thank you very much , im waiting

[hoaca388]

Re: Dell Latitude 5420 - Faulty BIOS Image

dell are saying that error message : 6 white 3 orange means :
flash corruption detected by SBIOS .
i dont know what means SBIOS , is it the secondary bios 16mb ?
we know that MBIOS means main bios 32mb
i think i must try to dump both bios

No, this is my fault , need repair EC region in bios file but i am working now, i will do that tomorrow.

[haithem]

Re: Dell Latitude 5420 - Faulty BIOS Image

dell are saying that error message : 6 white 3 orange means :
flash corruption detected by SBIOS .
i dont know what means SBIOS , is it the secondary bios 16mb ?
we know that MBIOS means main bios 32mb
i think i must try to dump both bios