Lenovo Legion 5 15ACH6 - turn on but black screen

[invert]

I want to fix a Lenovo Legion 5 15ACH6 laptop, the laptop turns on but the screen is black, GPU and CPU are cold.
Bios changed a few times, unfortunately it didn't help but it should have. Please help.
The hardware is AMD Ryzen 5

[invert]

I want to fix a Lenovo Legion 5 15ACH6 laptop, the laptop turns on but the screen is black, GPU and CPU are cold.
Bios changed a few times, unfortunately it didn't help but it should have. Please help.
The hardware is AMD Ryzen 5

Motherboard is NM-D601

[bulldog uk1]

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