The hub was damaged, replacing the hub solved the problem

The dump is working, the problem was on the motherboard

I installed the firmware for the u52 chip and flashed the EС, the result is the same, if there are options I'll still wait. Thank you

After pressing the button, the laptop turns on the keyboard backlight, it changes within 1 minute, and then the fans turn on to maximum, and after one minute the laptop turns off. There is no image on the display, there is no display backlight, there is also a reaction to the on and off button. Without RAM, the laptop behaves the same way, I'm surprised.

Sound card, Realtek...

Looking for a working BIOS for GIGABYTE G5 KD laptop motherboard NH50HPMB-0D
There are also markings on the motherboard
6-71-N5HP0-D04
SN/ 1TNH50HP000003054018
P/N 6-77-NH50HP00-D04-5C#1GB1
The problem is as follows
The laptop turns on, there is no image or backlight, after a minute the fans turn on, there is no old BIOS dump, please help​...