Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

[ub6ib969]

Hi,

I require a clean BIOS for the Yoga C740-14IML motherboard NM-C431 REV 1.0, I have attached the dump. Thank you for all your help in advance.

[qayyum786]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

hi,

i require a clean bios for the yoga c740-14iml motherboard nm-c431 rev 1.0, i have attached the dump. Thank you for all your help in advance.

here you go

[ub6ib969]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

Thank you will try and post

[ub6ib969]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

thank you however it didn't work. Unit powers on fans spin however no post. please review again. thanks

[hoaca388]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

thank you however it didn't work. Unit powers on fans spin however no post. please review again. thanks

Yoga C740-14IML Laptop (Lenovo)

[lapfix]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

Hi,

I require a clean BIOS for the Yoga C740-14IML motherboard NM-C431 REV 1.0, I have attached the dump. Thank you for all your help in advance.

If bios posted by hoaca388 didn t work than try mine

[bekirsalman]

It was very useful to me.

[ub6ib969]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

If bios posted by hoaca388 didn t work than try mine

It worked! however the unit is unable to boot into windows due to the security keys and bitblocker being enabled. can this be salvaged from the original bios?

[lapfix]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

It worked! however the unit is unable to boot into windows due to the security keys and bitblocker being enabled. can this be salvaged from the original bios?

I Think no , in this case i proceed to formate my HDD

[lngcs]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

Hi please help me clean me. i attempt to open the bios with me analyzer keep crashing. also programmed post #6 bios got display but back to no display after ssd is plugged in. Check ssd is in perfect health. i've attached the old bios.thanks

[Orlin Saravia]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST

here you go

hi, in case there is no video, even having reprogrammed the bios, do you know what I can do?

[bumper1]

Re: Lenovo Yoga C740-14IML MB NM-C431 REV 1.0 BIOS REQUEST



If bios posted by hoaca388 didn t work than try mine

I used bios from post #6 to test and it's working. But when I copy from old bios DMI (I tried area 0x00 522 000 - 0x00 524 000, or biger 0x00 520 000 - 0x00 524 000 ) It doesn't work (black screen). What area should I copy?

[SMDFlea]

I used bios from post #6 to test and it's working. But when I copy from old bios DMI (I tried area 0x00 522 000 - 0x00 524 000, or biger 0x00 520 000 - 0x00 524 000 ) It doesn't work (black screen). What area should I copy?

Post your backup.. and the laptop serial number

[bumper1]

S/N: PF1BFT9B Thanks for help.

[SMDFlea]

S/N: PF1BFT9B Thanks for help.

try

[Maxpower3]

I used bios from post #6 to test and it's working. But when I copy from old bios DMI .
What area should I copy?

Here DMI and Win key

decode with Xor

[SMDFlea]

Here DMI and Win key

I think the problem was he added his DMI to the bios at post 6, and that bios has the Debug section (9C) .His DMI 7C ,the 2 don`t play well together.To copy his DMI to the bios at post 6 he would have had to include the debug section as well 520000 - 523FFF
.The bios at post 5 has no debug section as its a virgin bios,only the DMI needed copying to it 522000 - 523FFF

.

[Maxpower3]

that bios has the Debug section

.

ok LBDG, good to know
thanks

[bumper1]

decode with Xor

Great trick. I will remember it.

try

It is working now! I see I have different SN then on the bottom cover. Maybe someone already played with this bios. I'm finishing job for weekend. I wiil test it more in monday and report.

[bumper1]

Laptop still works. Owner said that probably motherboard was replaced earlier (so there is different SN on the cover). I tried to replace 520 000 - 524 000 before my post, but no screen, mayby I did it wrong.
So for the future cases. Should I copy it all with LBDG, or do I need clean LBDG section everytime?

[jj.ww]

Hello Can i have help removing password from this dump

SN:PF21VWFM