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bouny56 · 01-16-2026, 02:42 AM

Hello

New test today: I flashed a clean BIOS, entered a service tag, then pressed Alt+F and booted directly from an SSD with Windows. I ran Windows for several hours; it performed updates, the computer rebooted, and then nothing again... I can't restart it.

Does anyone have any ideas, please? If I reflash the BIOS, the PC boots directly

but how do I keep it stable?

I've attached the original BIOS file....

bouny56 · 01-14-2026, 02:55 PM

Hello, I saw other posts on the forum with the same symptoms. Flashed a new BIOS ok, entered the service tag ok, disabled Absolute ok, rebooted and then it wouldn't turn on anymore. Has anyone found a solution please? Thank you...

bouny56 · 01-13-2026, 08:25 AM

hello, thanks, the motherboard start , i write the service tag, disable absolute, ok , the motherboard restart then shutdown , and no start again

If i write again your bios, same work, write service tag then nothing

...

bouny56 · 01-13-2026, 04:06 AM

Hello, could you please help me?
Dell Latitude 5420
Motherboard: LA-K491P Rev 3.0 (A02)
The motherboard was purchased separately, so I don't have its original serial number, but I would like to use the serial number JL7Y3J3.
Symptom: Won't turn on
Consumption of 0.04A

Tested with several BIOS versions from the forum: Factory mode OK, I enter the serial number and disable Absolute => OK, reboot, then shuts down and won't restart. If I re-flash the BIOS, it remains stable in the BIOS. But if I restart, it won't turn on.

Thank you in adv...

bouny56 · 11-04-2025, 06:24 AM

Hello
Install new windows it's ok sorry

I have an other 850 g7
sn : 5CG0474LJJ

Beep for no ram
Test other bios here i have a boot but no screen

Here is the original bios
can you help me please?...

bouny56 · 10-30-2025, 01:53 AM

Hello, laptop work fine but when i turn it off the keyboard stay on and the power buttons top.
I need to long press power button to realy turn it off and then no problem to turn it on again

...

bouny56 · 10-29-2025, 07:50 AM

Hello, very big thanks , i think it's work, the laptop turn on and no bios password. Try to install windows now.

Again , big thanks...

bouny56 · 10-28-2025, 09:47 AM

Hello

Can you help me, i try some files here but the laptop blink

The original file is lock => but the laptop work
Try Rcunlock on 16mb same blinking capslock

serial : 5CG1310NZM
Mb : Camellia-6050A3140901-MB-A01(A1)

thanks...

bouny56 · 08-18-2025, 02:39 AM

hello, can you reupload the boardview please ?

bouny56 · 04-30-2025, 03:06 AM

Hello
I order a motherboard on lenovo parts long time ago, and now i want to use it in a laptop

The motherboard does not display; in internal screen nothing and in hdmi nothing

Fan spin normaly, power button work on and off, lenovo bios button work to power up, but no display
if i plug an usb devise , led on the devise is ok
no caps lock on the internal keyboard , no capslock on external keyboard

try bios of the forum but sometime i have backlight but no image, sometime with other bios no backlight

board is DALVACMB8D0 rev...

bouny56 · 02-13-2025, 06:57 AM

same measurement

...

bouny56 · 02-13-2025, 06:23 AM

Hello

Yeah 100% good soldering

Thanks...

bouny56 · 02-13-2025, 06:22 AM

Thx i check...

bouny56 · 02-07-2025, 01:44 PM

Many Thanks , it's work perfecly
What did i miss in my unlock ?...

bouny56 · 02-07-2025, 11:48 AM

hello thx, i try the 8FC8 patcher , write the file unlock and now the laptop is totaly dead

...

bouny56 · 02-07-2025, 11:18 AM

Hello

Can you unlock this 8FC8 latitude 3520 bios please ?
Mb : 203070-1
I5 11iem gen
ST : GPKTGG3

Thanks...

bouny56 · 01-31-2025, 06:36 AM

Hi

Big thanks, works perfectly...

bouny56 · 01-30-2025, 08:29 AM

Thanks for your help, but the laptop don't start with your bios, he is dead

...

bouny56 · 01-30-2025, 08:10 AM

Hello , this one work for me but very slow boot

Can someone unlock my original bios please?
Latitude 7310
st : B94NFB3
it's a 8FC8

Thanks...

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Lenovo E15 Nm-c421 usb-c work only in one side

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