Lenovo v14-iil bios need

[Zickko10]

PROBLEM: the laptop keeps restarting itself, not displaying and the power led light is blinking
the board number :GS44D/S54D NM-C711 REV 1.0
Model name :82c4
S/n:82C401EBAK
and here is the old Bios bin

[hoaca388]

PROBLEM: the laptop keeps restarting itself, not displaying and the power led light is blinking
the board number :GS44D/S54D NM-C711 REV 1.0
type:82c4
and here is the old Bios bin

Serial number , this is the new forum rule.

[SMDFlea]

PROBLEM: the laptop keeps restarting itself, not displaying and the power led light is blinking
the board number :GS44D/S54D NM-C711 REV 1.0
type:82c4
and here is the old Bios bin

You must always post the serial number/service tag/SNID as per the rules

https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/91593-rules-update-for-bios-requests-offers-avoid-banning-read-before-posting?t=103570

[Zickko10]

Serial number , this is the new forum rule.

Noted
I have done that now

[hoaca388]

PROBLEM: the laptop keeps restarting itself, not displaying and the power led light is blinking
the board number :GS44D/S54D NM-C711 REV 1.0
Model name :82c4
S/n:82C401EBAK
and here is the old Bios bin

V14-IIL Laptop (Lenovo) - Type 82C4

[Zickko10]

V14-IIL Laptop (Lenovo) - Type 82C4

I have flash this bin
still the same problem
Nothing change

[hoaca388]

I have flash this bin
still the same problem
Nothing change

You not have bios issue.

[Zickko10]

You not have bios issue.

Okay
pls who can guide me on how to solve this issue?

[monicaco92]

Hi!
Hello, I have done the DMI process on the original BIOS but I still can't get it to give video. All the voltages and measurements are correct in the hardware, it even gives video via HDMI. The BIOS has problems. I am attaching the BIOS that originally came with the computer.

Equipment data:
Lenovo V14-IIL
Model Name: 82C4
S/N:PF2RTVJC
MTM: 82C400U2SP
MFG Date": 2021/07/29
Factory ID: YH
MO: PF9XB1729075

Please, if you can do something, I'll appreciate it. Thanks in advance.

Reggards.

[SMDFlea]

Post merged with V14-IIL thread.

[kalilinux25]

Hi!
Hello, I have done the DMI process on the original BIOS but I still can't get it to give video. All the voltages and measurements are correct in the hardware, it even gives video via HDMI. The BIOS has problems. I am attaching the BIOS that originally came with the computer.

Equipment data:
Lenovo V14-IIL
Model Name: 82C4
S/N:PF2RTVJC
MTM: 82C400U2SP
MFG Date": 2021/07/29
Factory ID: YH
MO: PF9XB1729075

Please, if you can do something, I'll appreciate it. Thanks in advance.

Reggards.

fresh bin from website added dmi give feedback

[SMDFlea]

Hi!
All the voltages and measurements are correct in the hardware, it even gives video via HDMI

This problem is happening on a few different lenovo models,and its caused by a bios update. Downgrading the bios to an older version should fix it.

[monicaco92]

This problem is happening on a few different lenovo models,and its caused by a bios update. Downgrading the bios to an older version should fix it.

ok, try flashing a previous bios version. thanks for the help!
Reggards.

[SMDFlea]

ok, try flashing a previous bios version. thanks for the help!
Reggards.

I moved your post from the S145 thread as it was off-topic. A reply to your post in the S145 was made at the same time as i moved your post to this thread. I`ve merged that reply with this thread now https://www.badcaps.net/forum/troubl...85#post3460585 , if the downgrade doesn`t work try that bios

[monicaco92]

fresh bin from website added dmi give feedback

I have lowered the version and it still does not give video only through HDMI output, I have tried with the bios that you sent me and it still has the same problem, I have measured the entire video part from the connector all the way to the GPU part and everything is perfect, the fan works normally, the kbc has all its measurements correct.

[SMDFlea]

Its not a problem with the bios then so must be hardware.

[monicaco92]

I have lowered the version and it still does not give video only through HDMI output, I have tried with the bios that you sent me and it still has the same problem, I have measured the entire video part from the connector all the way to the GPU part and everything is perfect, the fan works normally, the kbc has all its measurements correct.

Can you send me a BIOS file that contains an older version? I would like to do some tests before reballing the CPU/GPU chip.
thank !

[Stefan Steff]

I have lowered the version and it still does not give video only through HDMI output, I have tried with the bios that you sent me and it still has the same problem, I have measured the entire video part from the connector all the way to the GPU part and everything is perfect, the fan works normally, the kbc has all its measurements correct.

Check the fuses around the LCD connector (on the main board both sides).. There is a fuse for backlight and others on 3.3V and any of them may be gone.
I guess you have an LCD backlight issue...when the laptop starts up light the screen with a flashlight and if you see the Lenovo logo then sure the backlight is your problem

[monicaco92]

Check the fuses around the LCD connector (on the main board both sides).. There is a fuse for backlight and others on 3.3V and any of them may be gone.
I guess you have an LCD backlight issue...when the laptop starts up light the screen with a flashlight and if you see the Lenovo logo then sure the backlight is your problem

It drives me crazy because all the voltages exist, the fuses are perfect. The video line measurements using an oscilloscope are perfect, those waves are very healthy. I have replaced the BIOS chip with a new one and it still doesn't give video. Do you have any BIOS with an older version?

[Stefan Steff]

I see the 14IIL and 15IIL share the same bios...


I have a CLEAR ME version for 15IIL to try...

[monicaco92]

I see the 14IIL and 15IIL share the same bios...


I have a CLEAR ME version for 15IIL to try...

Can you lend it to me? I have no more options with this team.

thank !

[Stefan Steff]

Can you lend it to me? I have no more options with this team.

thank !

It's attached to the earlier post...