Prime B450 Plus & Ryzen 5600x not booting (HELP)

[Antonio78]

Hi mates

I'm new at the community, so I think the best thing is to introduce myself. I'm in this sector from 25 years ago. In the past I have mounted several PCs from the scratch (including  with ASUS products). I haven't mounted nothing from the last 10 years and right now I have decided to mount a new PC for my song.

The problem I'm suffering is as follows. I have purchased the following components:

- Asus Prime B450 Plus

- 2x8GB Corsair Vengeance LPX DDR4 3200

- AMD Ryzen 5 5600x 3.7GHz

- Tempest PSU 750w

And I added an ASUS RogStrix 570 with 8GB.

The problem is after installed all the compoments and I'll try to plug it, system is not booting (fan doesn't rotate, no image,....) and appears a yellow light int PCI.

I have reviewed several forums and the only thing that seems to be wrong is the bios version.

I don't know how to solve it. I have tested with another GPU and it is the same.

Any ideas?

Regards

[Jiaszzz_ASUS]

Hello, @Antonio78 

Could you please confirm if the issue you are experiencing is occurring after replacing the motherboard and involves the system failing to boot, and share the full model of the current motherboard, such as the ROG Strix X570-E Gaming or ROG Strix X570-I Gaming?

Regarding the yellow indicator light, could you confirm whether it is the DRAM Q-LED on the motherboard or another PCIe indicator light?
If it is the DRAM Q-LED, we recommend referring to the instructions in [Motherboard] How to Query (CPU/Memory) QVL List, checking the QVL for your current motherboard, following the "Purchasing and Installation Guide" on the same page, and making sure that the memory is installed in the slots recommended by the motherboard manual.
If it is not a Q-LED, please provide relevant photos of the "yellow light int PCI" to help us better understand the issue.
Alternatively, you can refer to [Motherboard] Troubleshooting - No Power/No Boot/No Display for steps to minimize hardware configuration and identify potential hardware problems.

Thank you.