One more info . what if i erased wrong chip ???...

Hello everyone , i have lenovo legion 5 [URL="https://pcsupport.lenovo.com/gb/pl/products/laptops-and-netbooks/legion-series/legion-5-15ach6h/82ju/82ju002xuk/pf2yjsxv"]5-15ACH6H Laptop (Lenovo) - Type 82JU[/URL]
serial number is PF2YJSKV MTM : 82JU002XUK MO: PF9XB1523009

Already tryed use everything what is in post 5 but no success

My problem is black screen after power up and nothing more , backlight lights up and off , then sometimes bootloop , with nothing on screen , side power led blinking.

Before i flash bios from post 5 i have different...

Hello, my name is Tom, I'm rather an amateur, and whatever breaks something, I try to fix it myself. I guess that's it