lenovo c540

[Darko Svilkovic]

hi,

Hawe a problem with lenovo c540 AIO,bought this from a second hand,and
didn't see,and he didn,t mention that there is a bios admin pass ...

I have flashed the bios to a new wersion,taked out the cmos
battery,jumpered the cmos jumper but with no success ...

Now i heard that the password is in eeprom ...

How to remowe it ???

thx

Darko/Croatia

[Mike Banon]

"I have flashed the bios to a new version" - how you did that, using a
windows tool provided by a laptop manufacturer? If yes, then it
preserves the originally set password and maybe the other settings.
Try to extract a "clean" BIOS image from the BIOS update utility
provided by a laptop manufacturer. Then, using a flashrom-supported
programmer like USB CH341A with a test clip (SOIC8 ?) together with
our flashrom opensource tool, you might be able to flash a clean BIOS
image (without any passwords/settings) into your BIOS chip. Of course
please make a backup before flashing a new image, in the case it's
incorrect or you'd need to borrow some Intel ME-related regions or to
have a MAC address specified in your ROM in order for onboard Ethernet
working.

On Wed, Aug 7, 2019 at 12:01 PM Darko Svilkovic
 wrote:
> hi,
>
> Hawe a problem with lenovo c540 AIO,bought this from a second hand,and didn't see,and he didn,t mention that there is a bios admin pass ...
>
> I have flashed the bios to a new wersion,taked out the cmos battery,jumpered the cmos jumper but with no success ...
>
> Now i heard that the password is in eeprom ...
>
> How to remowe it ???
>
> thx
>
> Darko/Croatia
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