Thanks! Unfortunetly this didn´t solve my problem. Laptop is still stuck, but this time in stays on all time. I realy have to long press the power button to shut it off. I am investigating this more in the next days....

Hi guys!

I am mechanical engineer and work for a company that produces the assembly machines for the automotive industry.

I am very interested in TECH and despite that I am only a mechanical engineer :-) I like to surround myself with electrical stuff as well. Currently I am fully into the bios and mainboard repair videos on YouTube and currently bought some broken gaming laptops that I now try to fix.
Otherwise I am totally into 3D printing since 2008 and started a small business to supply industrial 3d-prints to big companies
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LENOVO LEGION 5 PRO 16ITH6H
S/N: PF3B52FQ
MTM: 82JD000XGE

The laptop won't start. It does something when you press the power button but after 20-30sec it just turns off again. Keyboard lights up, it charges (charging idicator light lights up), fans are running for a short time, but no display and no boot.

Find attached the UB1-2 and the UB3 dumps I pulled of the machine. I also added the pictures of the chips.

Thank you in advance!

Bios chips on my motherboard are:
UB1 UB2 Giga Device 25R64CSIG (GD25R64CSIG)
UB3 XMC QH128AHIG...