Question ASUS MoBo DOA?

[JRFreer]

Hello all,

I recently bought some components for a new build with a focus on video encoding. See the components below.

AMD Ryzen 9 5900X - https://www.amazon.com/dp/B08164VTWH
ASUS Prime B450M-A II - https://www.amazon.com/dp/B08KH12V25
(4x) 8GB G.Skill Ripjaws V Series DDR4 (F4-3200C16D-16GVKB) - https://www.amazon.com/dp/B015FXXBW0
EVGA 550W PSU - https://www.amazon.com/dp/B0B1S1PN6H
Corsair H100xRGB Elite Liquid Cooler - https://www.amazon.com/dp/B0C14B8BZV

Before I did anything, I ran ASUS flashback to update the BIOS to support AMD 5000 series. The flashback appeared to work correctly, green blinking light and whatnot.

When I hook up the power to the MoBo, the yellow LEDs on the board light up, but pressing the power switch has no effect. The fans don't turn, radiator won't pump, no POST, no activity LEDs...nada.

I've tried a different power switch and a different PSU and I triple checked both power connections to the board. Still nothing. I thought I had checked everything for compatibility, but maybe I missed something. ASUS' support only lists (Vermeer) 5900X as supported on this board, so maybe I got a different build CPU or something like that. Other than that, I can only speculate the the board is toast.

Any tips/ideas/feedback from you experts would be great. Thanks in advance.

 

[Ralston18]

Which motherboard LEDs are "yellow"?

This motherboard?

https://dlcdnets.asus.com/pub/ASUS/..._B450M-A_II_UM_WEB.pdf?model=PRIME B450M-A II

Confirm that I found the correct User Manual.

First, read through the manual and make careful note of all fine print, caveats, warnings etc..

Second, work through the manual page by page to ensure that all instructions and configurations were correct and properly done.

The manual is only 32 pages which seems a bit "short" on information.

Go to Asus's website and do a document search based on your specific motherboard.

Do be careful. Just because "Asus" appears in the URL that does not mean that the website is truly Asus.

There are some bogus websites that appear to provide various manuals and may get blocked as a threat.

 

[JRFreer]

Thanks for the reply.

Yeah, that's the manual. I have the hard copy that came with the board. The LEDs that are lit up are more aesthetic than anything. Glowing yellow at one end of the PCIE port. And a thin, artistic line (trying to look like a glowing circuit) near where the PCI cards exit the case.

I read though the manual during the build and followed the relevant instructions.

As for the website, I'm pretty sure that I am on the legit ASUS site. I downloaded the BIOS, and check compatibility from ---> https://www.asus.com/motherboards-c...-ii/helpdesk_cpu/?model2Name=PRIME-B450M-A-II