Lenovo Ideadpad gaming 3 15ACH6

[vildasha]

Attached is bios with password (lenovo_giga.rar and with password removed lenovo_giga (no password).rar). I was able to remove bios password, but laptop still no boot to the OS, its keep rebooting after windows logo and then tries recovery mode and reboots again, when I try to install windows from USB, it just reboots and loops again. So I logged in to the bios and enabled advanced mode by pressing Fn+R+N 3 times, changed some settings (I think it was hybrid or discrete graphic, something like that) and now I have just a black screen, power light is on and fans starting running. Not sure what to look now. Tried disconnecting battery and RTC battery, reflashing bios, still no fix.
Any suggestions?

[peste]

Hello, I have Idelapad Gaming 3 15ACH6
MB: GOG20 LA-L171P Rev:1a 2021-04-19
Bios: H3CN21WW (v1.04)
Bios Date 06/01/2021
Board Name: LNVNB161216
451AQN38L01 (4IMFG:2126)

Its not booting to windows, boot loop, live cd not working, its keep rebooting, linux as well, only EFI boot is allowed. tried different windows and linux distributions but its keep rebooting and tried to boot current windows, but on windows logo rebooting again.

I am unable to log to BIOS due to bios password.

Here is the current bios dump, can you help me find the password or remove it, please?

post the 16MB bios, look for a bios chip on the board and post the content..

[vildasha]

Hello, I have Idelapad Gaming 3 15ACH6
MB: GOG20 LA-L171P Rev:1a 2021-04-19
Bios: H3CN21WW (v1.04)
Bios Date 06/01/2021
Board Name: LNVNB161216
451AQN38L01 (4IMFG:2126)

Its not booting to windows, boot loop, live cd not working, its keep rebooting, linux as well, only EFI boot is allowed. tried different windows and linux distributions but its keep rebooting and tried to boot current windows, but on windows logo rebooting again.

I am unable to log to BIOS due to bios password.

Here is the current bios dump, can you help me find the password or remove it, please?

[peste]

Hello need dump LA-K971P Rev:1A Bios

Sn: MP24LTP6

read post #64..

[OsmGn32]

Hello need dump LA-K971P Rev:1A Bios

Sn: MP24LTP6

[SMDFlea]

Hi. Need dump it8176 for la-l171p gaming 3 15ACH6. Thx

Serial number,backup etc -> https://www.badcaps.net/forum/troubl...before-posting

[acelectric]

Hi. Need dump it8176 for la-l171p gaming 3 15ACH6. Thx

[roixijram]

read post #57

I have given you all the information about the device, what is missing, and I really need them, either new dump or repairing this one.

ideapad gamming 3 15ach6

[peste]

Please help: Lenovo IdeaPad Gaming black screen
matherboard : la-971p rev:1a
s/n:mp25xkht
mtl:201p9sp
mo;mpnxb22180ed

read post #57

[roixijram]

Please help: Lenovo IdeaPad Gaming black screen
matherboard : la-971p rev:1a
s/n:mp25xkht
mtl:201p9sp
mo;mpnxb22180ed

[pyanystul]

These are the 2 bios file original backup

[pyanystul]

I have a problem with 15ACH6 laptop:
First time the laptop worked but had bios password.
The laptop has 2 BIOS cips (WINBOND) I download the bios from lenovo website (8Mb), I delete and write new bios to the first winbond cip (25Q16..) no change, laptop worked but still had bios pass.
I delete 2th winbond cip (74M12...) and I rewrite back with the oiginal bios file extracte before (120Kb), I didn't make any chages to the original bin file, I only read the cip, I did an backup then I delete the cip and write back the same bios file from previous backup.
Now the laptop has black screen....

[peste]

15ACH6

SN : MP23HTM7

Thanks !

Post the full name and model of the laptop, motherboard model, what problem the laptop has, type, etc..
read..https://www.badcaps.net/forum/troubl...before-posting

[w2k6]

15ACH6

SN : MP23HTM7

Thanks !

[hoaca388]

I looked at these bios in the editor, my BIOS starts differently, in my dump it starts with the multicontroller firmware, but there it’s different. The second thing that confused me is that I don’t understand how to figure out which version of these four I have. I ask for your help

Just try all 4.

[viper_]

# 48 .........

I looked at these bios in the editor, my BIOS starts differently, in my dump it starts with the multicontroller firmware, but there it’s different. The second thing that confused me is that I don’t understand how to figure out which version of these four I have. I ask for your help

[hoaca388]

I understand you, I apologize for my inattention

# 48 .........

[viper_]

I understand you, I apologize for my inattention

[Vesko356]

I just thought it was okay not to indicate it,

No, it's not "okay", the rules are clear:
You MUST:

Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.
Name your thread with make, full model numbers and request

[viper_]

I changed it to the full name of the model, I just thought it was okay not to indicate it, because there are problems with Lenevo Ideapad 3 15ACH6 in this thread