Bios unlock for DELL LATITUDE 7420

[nexttoyou]

PLEASE I HAVE DELL LATITUDE 7420 IT NOT COMING UP I NEED A WORKING FILE THANKS

[SMDFlea]

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

[sLs112]

Please unlock bios:
Dell Latitude 7420
ST: DWTWXD3
MB: LA-K371P rev. 3.0

[rex98]

Please unlock bios:
Dell Latitude 7420
ST: DWTWXD3
MB: LA-K371P rev. 3.0

1st boot, press F2, write service tag, disable Absolute, save, restart. 2nd boot press Alt+F to exit manufacturing mode

[sLs112]

1st boot, press F2, write service tag, disable Absolute, save, restart. 2nd boot press Alt+F to exit manufacturing mode

Thank you so much!

[user212dan]

DELL Latitude 7420
ST:7XQ14J3

Bios pass, can you help ?

[Markus1741]

Hello try this file.

[user212dan]

Hello try this file.

Thanks, but no luck .. fan speeds up, after 2-3 min and few restarts, it's making LCD WRGB test, then restart. No image

[minhdigital]

Thanks, but no luck .. fan speeds up, after 2-3 min and few restarts, it's making LCD WRGB test, then restart. No image

Try

[Markus1741]

Thanks, but no luck .. fan speeds up, after 2-3 min and few restarts, it's making LCD WRGB test, then restart. No image

Hello, I'm sorry that it didn't work for you, I would like to tell you what I did using the pictures.
In the HxD Editor I added 00FCAA **00 0000 and 00FDAA ** 0000 and replaced the value AA with 00.
I didn't edit your original BIOS file any further.
Now I don't know what the very experienced user (minhdigital) edited.
In comparison, I saw that he does much more.
Only he knows that for sure.
I then always wait until I get into the BIOS after starting it several times with F2, then I insert the service tag and that should be it.
Maybe you'll have better luck with the new file.
Good luck

[user212dan]

Try

Thanks you minhdigital I'll try and give you feedback.

Markus1741 , I've also done a few bios pass in past, and many of them are ok, but this one....
Actually your file is 1:1 with my attempt

[user212dan]

Try

Hi, not working. After few restarts, blink with Dell logo, then restart and no image, then after about 1min shutdown

[shiyab]

Hi, not working. After few restarts, blink with Dell logo, then restart and no image, then after about 1min shutdown

hi try this file unlock

[user212dan]

hi try this file unlock

same as Markus1741 bios , after few restart LCD WRGB test, no image

[deep_bks]

Notebook Dell 7420
Service Tag - 87K64M3
HELP me to build this bios
Prob No power on only orange light is blinkin

[hoaca388]

Notebook Dell 7420
Service Tag - 87K64M3
HELP me to build this bios
Prob No power on only orange light is blinkin

Latitude 7420

[deep_bks]

Latitude 7420

Thank you hoaca388 display comes but stuck on Dell logo

[deviantcode]

Hey I have a locked bios on a Dell Latitude 7420 - LA-K371P Bios is gigadevice gd25q256 attached is the dump file. Would appreciate it!
SERVICE TAG: 5TZR3F3

[hoaca388]

Hey I have a locked bios on a Dell Latitude 7420 - LA-K371P Bios is gigadevice gd25q256 attached is the dump file. Would appreciate it!
SERVICE TAG: 5TZR3F3

Unlocked

[deviantcode]

Unlocked

Thanks alot!. I'll try it tomorrow morning.

[deviantcode]

Unlocked

Hey bro, so it unlocked the bios so thats awesome, however it says the "hardrive at ssD-0 is protected by password". says "dell security manager" is this another bios lock? or can i just format drive or put new drive in.