Computer won't post

[RidwanIPAD]

Hi, I recently assembled my new PC, but it wouldn't post. The GPU fans won't spin consistently and occasionally stutter, possibly due to the temperature required to activate the fan. What's even more perplexing is that the case buttons aren't working, despite being connected in a bundled connector where they are all combined.

Ryzen 5 5600
Asus Prime b550-a WIFI II Micro ATX
TEAMGROUP Elite 16 GB (2 x 8 GB) DDR4-3200 CL22 Memory
Crucial P3 Plus 1 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive
Gigabyte GAMING OC Radeon RX 6500 XT 4 GB Video Card
Phanteks Eclipse G300A
Thermaltake Smart 500 W 80+ Certified ATX Power Supply 

I have attempted to troubleshoot the issue. The power, case fans, and CPU fan are functioning properly, but the GPU fan is stuttering. I have tried a CMOS reset to no avail. I have also reseated both sticks of RAM.
My last consideration is a possible BIOS version mismatch, where this board may not support BIOS flashing, and I don't have an older CPU on hand.

Thanks

Edited December 20, 2023 by RidwanIPAD
I accidenly paste more imagesd

[RidwanIPAD]

I am sorry for the extra two images, I didn't see them when I posted and editing doesn't fix it

[assanobinaden]

I had the same problem too!

[Yua]

That's a 3rd gen chipset with a 5th gen cpu so most likely all you need is the Bios update.

The thing is, I searched on the maual and I couldn't find the feature to update the Bios without the need to access it first.

 

Maybe a friend could help you? Or the store where you bought it?

[RidwanIPAD]

It looks like I have an RMA board because I don't have an older CPU. If that doesn't work, I will probably try the AMD CPU loaner program.
Thanks for you help