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hey i got a latitude 5420 LA-K491P Rev: 2.0(A01) that is bios locked ST:H1GN6D3Leave a comment:
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Need help please
Dell 5420 LA-K491P Rev : 2.0(A01)
ST : 6VY86M3
can anyone unlock this BIOS?Leave a comment:
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Dell Latitude 5420
Mother Board - GDF40 LA-K491P
Rev: 3.0(A02) 2021-04-28
S/T: 8MVS5M3
Bios update error , The current status is that there is a TPM error and the hard drive is not recognized. The BIOS versions on the forum either do not display anything or show the logo and then blink 3 amber and 6 white. Some BIOS versions disable the TPM error but still do not recognize the SSD. I am attaching the original BIOS and hope everyone can help.Leave a comment:
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Please read https://www.badcaps.net/forum/troubl...before-posting and post the laptop service tag.Leave a comment:
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Also, this is the one I tried that makes the laptop boot into Windows, with working nvme, fingerprint reader etc, but as I previously said, entering service tag and exiting manufacturing mode causes it to brick again: https://www.badcaps.net/forum/troubl...52#post1685652
What's worth noting, is that using this bios screen has some lines at the top and at the bottom, which looks like some timings/synchronization issue, because it reacts weirdly to changing resolution and the screen doesn't look like broken. On external display via hdmi it's ok.Leave a comment:
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Have a dell latitude 5420 bord with i3 cpu with bios problem(does not start after fail bios update)
Can someone please help?Leave a comment:
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Bios TPM error and not detect SSD NVME
LBTT1121 , BIos no detcect SSD and restart , and not display error 3 amber 6 whiteLeave a comment:
only this:
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So, i kinda spend significant ammount of the last couple of days trying to flash a new bios, and or unlocking the current bios password with little to no results.
The whole thing started with it being the 8fc8 bios, i found the tools to unlock that but i needed a bios dump. So i pursued that, im at a point where i dessoudered the chip, and succesfully soudered it to the ch341, dumped whatever was on it.
However, the tools supposed to unlock the 8fc8 say that there is no 8fc8 hex inside. And when i followed diffrent tutorials to just flash a new bios onto the chip i got stuck on the... -
Hi
i have dell latitude E7270 with following symptoms:
- takes long time to restart.
- sometimes powers on and then off
- sometimes while working it just dies,
From googling online bios clean could possible resolve this?
i was able to save bios and was going to try bios clean myself but get an below error when i drop it in ME analyzer.(unsure whether this sometimes occurs or could be due to bad/corrupt bios)
As ME analyzer gave me an error i just decided to write bios with a cleaned bios from E7270 bios post.
I reinstall... -
Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
Dell latitude 5580, motherboard cdp 80 la-e151p
3 amber 3 white blinks. Dell website sais it's problem "bios recovery" and suggested solution "recovery image not found"
(from here https://www.dell.com/support/manuals...e7a&lang=en-us)
I try plugging charger while pressing ctrl+esc, machine turns on, nothing and after 20 seconds it gives 3 amber 3 white blinks again.
Since ssd is replaced and had clean install windows, i've... -
This specification for the DELL Latitude 5420 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 5420 boardview and 5420 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL Latitude 5420...09-07-2024, 06:31 AM
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