lenovo legion 5-15ach6h bios request

[nobody19]

Post the bios backup file.

Sure I will provide it soon when the programmer arrives. But I have one question should I desolder the BIOS chip before I program it or with the board I don't want to damage the motherboard but I have tools to remove it

[hoaca388]

Sure I will provide it soon when the programmer arrives. But I have one question should I desolder the BIOS chip before I program it or with the board I don't want to damage the motherboard but I have tools to remove it

Remove all power sources before programming.

[nobody19]

Sure I will remove everything Ram, CMOS Battery, Battery, SSD. Thanks for your help.

[nobody19]

Remove all power sources before programming.

Hi sorry took some time to receive the programmer. But it is not CH341, not CH341A what is the difference will both work on this laptop? I am trying to connect but it is not detecting the chip I tried multiple times but didn't detect maybe because of the programmer I couldn't find software for CH341 on Google the software's only for CH341A. Can you please help? The blow image is the software I am using

[nobody19]

I connected the clapping to the front and it worked

[nobody19]

Post the bios backup file.

Hi this is the original Bios And the 2nd is the latest bios downloaded from the Lenovo website :https://pcsupport.lenovo.com/us/en/p...3-B07A93E0428C

[hoaca388]

Hi this is the original Bios And the 2nd is the latest bios downloaded from the Lenovo website :https://pcsupport.lenovo.com/us/en/p...3-B07A93E0428C

Legion 5-15ACH6H Laptop (Lenovo) - Type 82JU

[nobody19]

WHen I click erase. It just instantly says successful. is this normal but it few minute to program it

[nobody19]

I think the software is not correct can you please send me the link to the software for CH341

[hoaca388]

https://www.badcaps.net/forum/troubl...21#post1622421

[nobody19]

Hi this is the original Bios And the 2nd is the latest bios downloaded from the Lenovo website :https://pcsupport.lenovo.com/us/en/p...3-B07A93E0428C

Hi Thankyou for your help I really apricated. But I am still getting the problems That I have in the starting laptop turns on without internal/external screen and if I don't sleep it it will turn off after 1-2 minutes of start and fans are at 100%. If I sleep it and wake I can hear window narrator and all the manes and laptop doesn't turn off.

[nobody19]

Legion 5-15ACH6H Laptop (Lenovo) - Type 82JU

Hi I have a question what if I use another bios same laptop model but the bios .bin file is not created by me. I found the attached bios online if flashed it but same results. What could be wrong in this laptop. The weird thing is after sleep it does not turn off.

[hoaca388]

Hi I have a question what if I use another bios same laptop model but the bios .bin file is not created by me. I found the attached bios online if flashed it but same results. What could be wrong in this laptop. The weird thing is after sleep it does not turn off.

My bios is downloaded from the LENOVO homepage, just add your device's DMI. If it doesn't work then you have another error, not caused by the bios.

[nobody19]

That is I am not sure what is causing the issues there was a driver that appeared in the window download. Name Lenovo firmware I think maybe that driver is the issue

[nobody19]

Hey Brother please help

[nobody19]

Legion 5-15ACH6H Laptop (Lenovo) - Type 82JU

The main thing is I managed to control the whole laptop using WhatsApp video calls and then sharing my screen. I updated all the drivers but nothing.
You can see this in the below screenshots the resolution is 640x480 from WhatsApp screen share the main display is black nothing. I have full control over the window I can update/remove drivers the laptop stays on infinity after sleep.
And in the device manager, there is no gpus detecting Nvidia and AMD raedion both are not there even in hidden devices.
When I update readion and Nvidia graphic driver they show errors you can see below in screenshots.

The GPUs are not been detected (Display adapters ) Check ss below
The internal/external displays are not been detected ( Monitors ) check ss below
And regarding the auto shutoff issues I don't have any idea what is causing it the window is different I copied my 2nd laptop window in the ssd. BIOS is reprogrammed thanks to you
Nvidia and AMD drivers are failing


Remember I am doing all this using screen share and sleep it before it turns itself off.

Please help I searched the whole internet but couldn't find anything I tried everything even reprogramming the BIOS

[nobody19]

Hey Brother please help

[nobody19]

My bios is downloaded from the LENOVO homepage, just add your device's DMI. If it doesn't work then you have another error, not caused by the bios.

Hi, I managed to turn the screen on just by doing random things in the window. But my Nvidia GPU is not working and I still have the auto shutdown issue

[kalilinux25]

Hi, I managed to turn the screen on just by doing random things in the window. But my Nvidia GPU is not working and I still have the auto shutdown issue

what those the device manager say? maybe a error code 32?

[nobody19]

The GPU driver is not even on the device manager hidden device if I try to install it manuely nvdia shows me error "No Nvidia gpus is detected on your system"

[nobody19]

what those the device manager say? maybe a error code 32?

Where Can I find the error code 32

[kalilinux25]

Where Can I find the error code 32

in windows device manager

[nobody19]

There is no error 32

[nobody19]

Literally, no one is helping even Levono support

[nobody19]

1st video is when I don't sleep on the laptop you can see it just shuts down. It happens everywhere BIOS, Windows Installer, Windows Recovery.
2nd is after sleep. And you can my Nvidia RTX 3070 is not been detected even after uninstalling/updating anything. BIOS does detect the 3070 GPU(Image)

[Prox]

Legion 5-15ACH6H Laptop (Lenovo) - Type 82JU
Serial Number - PF3904NV
Mother Board - nm-d562 rev 3.0

Hello, I need BIOS as my previous BIOS is corrupted.
Issue - When I turn the laptop on the Screen in Black, only the Keyboard lights up and fan spins and after a few mins everything turns off.

The Technician working on my laptop provided me these files linked below as BIOS dumps from my laptop.

As he is not able to fix or provide me with a new bios file, I am requesting here.

Any Question is welcomed and solutions too.

Thanks

[Prox]

Legion 5-15ACH6H Laptop (Lenovo) - Type 82JU
Serial Number - PF3904NV
Mother Board - nm-d562 rev 3.0

Hello, I need BIOS as my previous BIOS is corrupted.
Issue - When I turn the laptop on the Screen in Black, only the Keyboard lights up and fan spins and after a few mins everything turns off.

The Technician working on my laptop provided me these files linked below as BIOS dumps from my laptop.

As he is not able to fix or provide me with a new bios file, I am requesting here.

Any Question is welcomed and solutions too.

Thanks

Would really appreciate if someone helps

[qayyum786]

posted bios doesn't match with laptop description
as per serial number laptop is AMD based cpu

[qayyum786]

Serial Number :- PF3904NV

Bios extracted from Lenovo Support

[Prox]

Serial Number :- PF3904NV

Bios extracted from Lenovo Support

Hey update.

The BIOS is not working.

[danielmaty]

Hi everyone,
First of all, I want to say thank you to all contributors, especially to the veterans of the forum for building this community and for all the great descriptions and guides you've shared, I've learnt a lot in the past few days.
However I got a bit stuck with a problem I have with the following laptop:

Lenovo Legion 5-15ACH6H - Type 82JU
Serial Number - PF30JWLD (machine info)
MB ID: NM-D562 rev 2.0
BIOS flash: Winbond W74M12JW

symptoms: no display after startup, no keyboard/backlight, power button LED lights up, aside from this nothing else happens..
It's not my laptop, so got only very little info about the circumstances when the problem popped up.
My suspicion is that a BIOS update - pushed by the Windows Update - got interrupted -> there was a new BIOS released by lenovo on 7th February, problems started a couple days later. The owner remembers that the "machine didn't shut down" , the power LED was still on (maybe the ongoin BIOS update?), so he forced the shutdown with the button..

what i tried: Removed&replaced RAM, SSD, disconnected battery, CMOS battery, long pressing power button etcetc, but no luck..
Got a CH341A, installed AsProgrammer 2.0.4.

Chip is still on the board, I used the SOIC clip, it seems to be working.
Dumped the original BIOS, see attachments.
Earlier messages suggested that the DMI is under 5AC000 - 5ADFFF -> took the original data and copied it to an earlier posted BIOS bin.(attached)
Flashed the new BIOS, verification was OK.
The fix didn't work, behavior is the same

Tried it a few more times with different BIOS files. (i didn't extract the very latest BIOS from lenovo yet)

Questions: As I learned, the W74 is an "authentication flash" (see Reveltronics forum , Winbond) and it stores a keyword *somewhere* which I assume shouldn't be lost during a reflash.. hope someone knows how this chip works and can help me to understand a few things:
1) how to tell if this security feature is active? I assume it is, otherwise Lenovo wouldn't pay for a presumably more expensive chip if they don't use the feature.. is this keyword section at a fixed address?
2) how does the "normal" BIOS update keep this data? Does it not erase the whole chip but simply overwrites the changed bytes?

2a) assuming the keyword is at a fixed location, should multi-step flashing work? Flashing the original dump + flashing a fresh BIOS without erasing the chip?
Tbh I already tried this but it didn't work, however I used the earlier provided bin files.. could it work with the newest extracted BIOS (which should partially be in my backup i guess..)

Any help would be appreciated!

BR,
Daniel