Request bios lenovo V14 G2 ALC Corrupted failed update

[rramdandi]

please help me my laptop screen is dead only esc and caps lock keys are lit
I really appreciate someone helping me.

Type: Lenovo v14 G2 ALC
Sn: PF3AM7A3
HV416&HV516 NM-D522 REV: 2.0

bios backup

[hoaca388]

please help me my laptop screen is dead only esc and caps lock keys are lit
I really appreciate someone helping me.

Type: Lenovo v14 G2 ALC
Sn: PF3AM7A3
HV416&HV516 NM-D522 REV: 2.0

bios backup

V14 G2-ALC Laptop (Lenovo) - Type 82KC

[rramdandi]

Thank you brother.. 🙏 my laptop is back on but I found the problem of invalid mtm, invalid lenovo sn, invalid uuid number
Can you help me again?

[hoaca388]

Thank you brother.. 🙏 my laptop is back on but I found the problem of invalid mtm, invalid lenovo sn, invalid uuid number
Can you help me again?

I copied the DMI block to the new file already ?

[hoaca388]

This is a non_DMI bios.

To add DMI, find on forums keyword " Golden key ".

[rramdandi]

This is a non_DMI bios.

To add DMI, find on forums keyword " Golden key ".

It's not really important, I'll study it later.. thank you very much for helping me 🙏😊

[svoi777]

Hi guys. Tell me how to insert a Windows key into UEFI or a dump?

[peste]

Hi guys. Tell me how to insert a Windows key into UEFI or a dump?

post S/N, full name and model, motherboard model, etc.

post the original contents of the bios chip..

[svoi777]

The original is all corrupted. The dump downloaded above is filled in, the serial number of the original MTM is installed with a gold key. In addition to the Windows key.
I can disassemble, solder and drain it again if necessary.

[nickojean22]

can anyone help power led only i attache my orig bios
14 G2-ALC Laptop (Lenovo) - Type 82KC

Serial Number
PF3L3Z5V
Machine Type Model
82KC00BXPH

[hoaca388]

can anyone help power led only i attache my orig bios
14 G2-ALC Laptop (Lenovo) - Type 82KC
Serial Number
PF3L3Z5V
Machine Type Model
82KC00BXPH

V14 G2-ALC Laptop (Lenovo) - Type 82KC

[nickojean22]

hello the laptop is working not until i shutdown i have to flash the bios again what the problem of this unit?

[SMDFlea]

change the bios chip

[nickojean22]

tnx for the help i flash 2times now the laptop is working great tnx @hoaca388 for the working bios file

[cocolinofan]

Hello,

I have a Lenovo V14 G2 ALC. I bought it and put Linux on in, life was good. I had some work that can only be done in Windows so, I've made a Windows Live USB to boot from that and do my work. I boot from USB, Window logo shows up and loading, 10 minutes later no progress, I hold the power putton the shut down. RIP laptop. From that moment on my laptop stop booting, no UEFI, Caps Lock light not working, no nothing. My best guess? Somehow Windows corrupted my BIOS.
With help from this amazing forum I manage to extract... something.... from Lenovo's Bios Updater .exe, I flash that on the laptop and well, there is some progress. Laptop boots, Caps Lock works, but the laptop screen does not come on. I can connect a HDMI cable to an external monitor and I do have an image. I don't see any obvious issues with the hardware or connections.
Can anyone help me with a BIOS blob that should 100% work?

Laptop: Lenovo V14 G2 ALC Type 82KC
Motherboard: HV461&HV561 NM-D522 2020-12-11 Rev:2.0
S/N: PF3FAMSR
Original Corrupt BIOS dump: OriginalCorruptBIOSdump
Lenovo's latest BIOS Updater exe: LenovoUpdaterGLCN68WW

P.S. I have tried all the blobs in this post. Interastigly, the first blob by hoaca388 (post #2) kinda works? It boots and the laptop screen works but is very deem (like there backlight is totally off) and I can't increese the brightness.

[cocolinofan]

I am sorry for the tar archive. I am struggling to make .rars on Linux.

[hoaca388]

Hello,

I have a Lenovo V14 G2 ALC. I bought it and put Linux on in, life was good. I had some work that can only be done in Windows so, I've made a Windows Live USB to boot from that and do my work. I boot from USB, Window logo shows up and loading, 10 minutes later no progress, I hold the power putton the shut down. RIP laptop. From that moment on my laptop stop booting, no UEFI, Caps Lock light not working, no nothing. My best guess? Somehow Windows corrupted my BIOS.
With help from this amazing forum I manage to extract... something.... from Lenovo's Bios Updater .exe, I flash that on the laptop and well, there is some progress. Laptop boots, Caps Lock works, but the laptop screen does not come on. I can connect a HDMI cable to an external monitor and I do have an image. I don't see any obvious issues with the hardware or connections.
Can anyone help me with a BIOS blob that should 100% work?

Laptop: Lenovo V14 G2 ALC Type 82KC
Motherboard: HV461&HV561 NM-D522 2020-12-11 Rev:2.0
S/N: PF3FAMSR
Original Corrupt BIOS dump: OriginalCorruptBIOSdump
Lenovo's latest BIOS Updater exe: LenovoUpdaterGLCN68WW

P.S. I have tried all the blobs in this post. Interastigly, the first blob by hoaca388 (post #2) kinda works? It boots and the laptop screen works but is very deem (like there backlight is totally off) and I can't increese the brightness.

I think there was a coincidental hardware failure.

[cocolinofan]

I think there was a coincidental hardware failure.

That's what I thought as well. But then, I tried some firmware and only the Lenovo logo came up on the laptop screen, with other firmware the screen worked just no backlight, with my old corrupt firmware nothing show on the laptop screen or through HDMI.

Can you help me with a working BIOS Sir? I am not lazy, I am working on this for a week, and I am at the end of my wits. Just so I know 100% is the hardware and then I will buy a new screen.
I will update this post with my findings.

[m1ch43lzm]

Attempt with older version GLCN52WW from the V15 G2 ALC thread, as the oldest version I could download from Lenovo webpage is GLCN66WW by renaming the URL
https://download.lenovo.com/consumer...s/glcn66ww.exe

Those models share the same BIOS: S14 G2 ALC/S15 G2 ALC/IdeaPad 3 14ALC6/IdeaPad 14sALC 2021/IdeaPad 3 15ALC6/IdeaPad 15sALC 2021/IdeaPad 3 17ALC6/IdeaPad 3 15ALC6/Lenovo V14 G2 ALC/Lenovo V15 G2 ALC
https://www.badcaps.net/forum/troubl...37#post3164537

Attached BIOS with your DMI inserted

V14 G2-ALC Laptop (Lenovo) - Type 82KC
Bios ver GLCN52WW
DMI 1000-2FFF
S/N PF3FAMSR

Maybe the issue is not the screen itself, but the screen cable, or the backlight fuse in the motherboard

[cocolinofan]

Thank you so so muchm1ch43lzm !
I've flashed it and there is still no backlight, hoaca388 was right, there is also a hardware problem 😞. But at least now, I can stop thinking about the BIOS.

Apparently the backlight circuit tends to die if you connect the monitor whilst the battery is still plugged in (something I probably did 😳).
I found the board view and schematic for this board and I will attach them to this tread, maybe someone will find in them useful in the future.

I have a cheap multimiter and I did look around a bit, but I can't tell what voltages or resitances are normal.
Is so satisfying fixing things. I could probably do it myself, but it will take too log, this laptop is my main machine and is already broken for a week. I think I will swallow my pride and take it to a repair shop.

[SMDFlea]

If you want more help start a new topic in laptop troubleshooting and someone will help.

[ColBrubaker]

Hello Folks,

may I join? I battle since 2 weeks a downclocked Lenovo V14 G2 ALC.
There are 2 Linux on it: MX-Linux and Kali Everything.
Cause was probably a heat event and it is obviously a hardware problem.
The CPU got new cooling paste. The error was CPU#X stuck for 28s.
The problem does not appear anymore, but it is still downclocked on 400Mhz.
I try to update the Bios/Uefi, to solve this. At the moment I download HBCD_PE_x64.iso