have a dell latitude 5420 bord LA-k491P with bios problem(does not switch on).
the original dump is corrupted.Can someone please help?
the original dump is corrupted.Can someone please help?
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Re: latitude 5420 bord LA-k491P bios problem.
Here↵
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Re: latitude 5420 bord LA-k491P bios problem.
Thanks will test it.Comment
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Re: latitude 5420 bord LA-k491P bios problem.
not working.Machine does not even turn on.Comment
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Re: latitude 5420 bord LA-k491P bios problem.
sevice tag !Comment
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Re: latitude 5420 bord LA-k491P bios problem.
tryComment
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Re: latitude 5420 bord LA-k491P bios problem.
thank you so much.With this it swiches on normally but still no image.Comment
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Re: latitude 5420 bord LA-k491P bios problem.
Just wait a few second ,laptop may restart few times tooComment
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Re: latitude 5420 bord LA-k491P bios problem.
This one is a real pain.changed the screen finally got image machine boots but after entering the service tag got an error(wrong service tag) witch is weird restarted it and no boot no image again.Comment
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dell 5420 LA-K491P PASWORD
could you help me unlock this biosComment
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Re: latitude 5420 bord LA-k491P bios problem.
plz need help , need to unlock this dumpComment
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Re: latitude 5420 bord LA-k491P bios problem.
problem solved thanksComment
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Re: latitude 5420 bord LA-k491P bios problem.
please how to read this bios?
laptop died after update in windows
bios chip its winbond W25R256JV
i have tl866II
thanksComment
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Re: latitude 5420 bord LA-k491P bios problem.
i used
MOSI: Master Out Slave In (data output from master); PIN 5 TL866 TO PIN 2 IO0
MISO: Master In Slave Out (data output from slave) pin 4 tl866 to pin 5 io1 - when i use this - all bin was 000000
tried this variant to
MOSI: Master Out Slave In (data output from master); PIN 5 TL866 TO PIN 5 IO0
MISO: Master In Slave Out (data output from slave) pin 4 tl866 to pin 2 io1 - same result all bin memory 0000000Last edited by darckreign1984; 11-17-2022, 10:39 AM.Comment
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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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