ThinkBook 15 G2 ITL bios password help needed

Hi everyone!
I need your help with resetting a bios password for this laptop.
(BTW I had to recreated this thread as it was joined with another with same title)

I already tried some stuff but I cannot get any further now.
Laptop Model is a Lenovo ThinkBook 15 G2 ITL
Interesting ICs on mainboard:
Winbond 25Q80DVWIG 2134
24256e S15038

Details:
I started trying the stupid things first as I didn't tried reseting a password since several years (took CMOS and battery...

Re: ThinkBook 15 G2 ITL bios password

Weired, I created a new thread with the same title as this one and it kinda joined them. I'll recreate another

Re: New Members - please post your introductions here

Hello everyone!
Let me introduce myself: I am an IT guy from germany.
My very first computer was a Sinclair ZX spectrum. After that I got a C64 (with floppy and datasette), Amiga 600 and then went to the 386/486 pcs.

Since the beginning I found the hardware and the software of PCs interesting.
I started being a software developer and I'm doing this for 15 years now (Java, C/C++)
Whenever needed I reverse engineered things to find out how it works. Even did some Assembler tools for myself....