There really was a problem with soldering. I redid it, checked it with a microscope. The behavior when starting the laptop has changed as it was after the f8cn58ww update. The power button, esc and caps lights up, then everything goes out and lights up again, while caps goes out and nothing else happens. If there are any other options on how to fix this, please suggest.

P.S. Please note that I previously updated Intel Management Engine 15.0 Firmware to version F8ME05WW.

Thank you!​...

Unfortunately, it didn't work. But the symptoms are different, earlier the LEDs on the caps lock and escape were lit, now only the power button slowly blinks. As if there is no BIOS at all....

Hi

Lenovo Thinkbook 14 G2 ITL
MO: MPNXB13230E6
MTM: 20VD00CSUA
Factory ID: PRC4
S/N: MP1ZHRPF

After updating to firmware f8cn59ww, the fan stopped working and the sound card was not detected. On the support forum, the manufacturer sent me the previous firmware f8cn58ww and after this update, the screen stopped showing. HDMI connection does not work. I only have dumps of the firmware f8cn58ww, I will attach them to the message. I will also add the installation file.
I also tried the firmware from post 19, it does not work.

Please...