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Dell latitude 5420ST; 8DMS0T3MB; GDF40 LA-K491P Rev;2.0(A01PLS unlock passwordLeave a comment:
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Hell, can anyone unlock this BIOS? THANKS
DELL LATITUDE 5420
LA-K491P REV2.0
st:GF89QN3Leave a comment:
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Read the rules please https://www.badcaps.net/forum/troubl...before-posting ,and type the service tag
Leave a comment:
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Hell, can anyone unlock this BIOS? THANKS
DELL LATITUDE 5420
LA-K491P REV2.0
Leave a comment:
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Hello, can anyone unlock this BIOS?
Dell latitude 5420
ST: FSQ03D3
MB: LA-K491P REV 2.0 (A01)Leave a comment:
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Dell Latitude 5420
ST: 4VTXKN3
MB: GDF40 LA-K491P Rev.2.0 (A01) 2021-01-15
Lost original chip which was faulty, now tried around 10 different dumps from here and laptop does various things, either way stuck on Dell logo and 6 white 3 amber, or with other dumps screen starts doing diagnostics by changing colours and on off loop. Please helpLeave a comment:
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Dell latitude 5420
ST; 2SFG1F3
MB; GDF40 LA-K491P Rev;2.0(A01)
Poblem ; NO Display pleas fix6Leave a comment:
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Read https://www.badcaps.net/forum/troubl...before-posting ,and post the service tagLeave a comment:
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Thank you very much, I deleted the password using a method I found in the forumLeave a comment:
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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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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, 03:40 AM
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