Bios won't start?

Question

Iron

Bought a mini pc from aliexpress .
Ryzen 7 2700u variant, no RAM.
The seller assured that you need DDR4 2666MHZ RAM, up to 64GB is supported.
I took 2 modules https://www.citilink.ru/catalog/computers_and_note...
However, nothing starts.
Without RAM, the PC starts making noise with the cooler all the time.
With RAM modules - it starts to make noise and calms down. This is expected. I installed modules one at a time in different slots.
Twice it was possible to achieve a picture on the screen.
1. Chatreey logo and nothing happened.
2. Blue screen with two ABs at the bottom. Also nothing happened. Sorry for the soap in the photo. https://habrastorage.org/webt/jw/ib/96/jwib96ll5nc...

For this, the PC rebooted 30 times, no less.

https://www.amd.com/en/products/apu/amd-ryzen-7-2700u
It says it supports up to 2400mhz for RAM and the seller said up to 2666mhz.
I didn’t look in advance and now I don’t know, maybe I’m wrong and this memory module simply won’t work?

According to reviews, a good PC + on youtube has enough reviews and tests, which is why I chose it.

Answer 1

I don't think it's a memory problem. Must take frequencies supported by the motherboard and processor. Does the motherboard have LEDs? Which one is on fire? What motherboard?