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hi, need help to remove TPM error:
TPM DEVICE IS NOT DETECED
DELL LATITUDE 5420-I7-11GEN
SERVICE-TAG-8ZQHR73Comment
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Hi there!
I have a Dell Latitude 5420 / ST: FC2JQF3 / GDF40 LA-K491P / Rev: 2.0 (A01) / 2020-11-16 / i5-11 model.
My client told me it ran out of battery while updating BIOS (yes, it did) and now seems more like a brick.
I have some doubts about this one:
It charges using a USB-C plug adapter and I have an asymmetric power source to see the consumption.
I don't know if I can plug it in 20V.
When plugged on 5V and when I try to raise it to 20, it turns out on 7V.
The original adapter is here with me, but It only shows a tiny white light and it's working fine.
I tried:- Flash BIOS (UC2)
- Flash EC (UT7)
But the behavior is always the same, before and after flashing: when I plug the adapter (5V), it consumes a variable amount of energy: 0.40 / 0.52 / 0.61 / 0.30 and keeps variating.
The original BIOS is attached here and also the EC.
Can someone help me to find the solution?Comment
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Need help with the bios posting original backup with current bios laptop power ups but no display, SERVICE TAG: CB610F3, GDF40 LA-491P REV:2.0, Dell Latitude 5420Comment
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try and feedbackComment
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Hello!
Dell Latitude 5420
GDF40 LA-K491P
ST:91M44J3
Start but no display
Please helpComment
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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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