LED CPU White On

Ben665 -  
 Boxedazerty74 -
Hello,

I am currently building my first PC and I find myself in an unpleasant situation. When starting up, the fans of the case and the processor are running.
However, no video signal is being output through the HDMI (which works with another source like the monitor). Additionally, the CPU LED on the debug is lit. No sound signals are emitted at startup.

My config: Motherboard: B550M A PRO
Processor: AMD Ryzen 5 5600G 3.9GHz Socket AM4
RAM sticks: Corsair Vengeance LPX 8GB
PSU: Corsair CV 450

4 réponses

seb77150 Posted messages 6285 Registration date   Status Membre Last intervention   500
 
Hi, you have an issue with the proc, remove it and see if by any chance you haven't bent some pins while inserting it

--
Computer science: the alliance of an inexact science and a fallible human activity
2
Ben665
 
I did it and the problem was probably that the motherboard was defective.
0
seb77150 Posted messages 6285 Registration date   Status Membre Last intervention   500 > Ben665
 
you should listen to epango, your CM isn't necessarily dead but just needs an update
0
Boxedazerty74
 

I checked, my pins were not dead, and no, they are all intact, but it's still happening.

0
epango Posted messages 37194 Registration date   Status Membre Last intervention   Ambassadeur 4 270
 
The MSI B550M-A PRO motherboard is only compatible with the Ryzen 5 5600G after a BIOS update. If the BIOS of your motherboard has not been updated beforehand, it is normal that it does not work. In this case, you will need to perform a prior BIOS update.

https://fr.msi.com/Motherboard/B550M-A-PRO/support#support-main-block-qvl

--
To misname things is to add to the misery of the world (Albert Camus)
0
Florian_0767 Posted messages 1 Status Membre 4
 
How do you update the BIOS if you can't see anything on the screen?
4
Ben665
 
I'm really sorry for the delayed response.
After testing the CPU, the motherboard, and everything else, I sent my machine to a computer friend who told me that the motherboard was simply dead.

I retested everything with a new motherboard (Tomahawk 550) and everything works perfectly now.

Topic to be closed.

Thank you all.
0
epango Posted messages 37194 Registration date   Status Membre Last intervention   Ambassadeur 4 270
 
Here is what is written for the MSI MAG B550 Tomahawk on the TopAchat website:

"This motherboard requires a BIOS update to work with Cezanne APUs (Ryzen 5000G)." .

https://www.topachat.com/pages/detail2_cat_est_micro_puis_rubrique_est_w_cm_am4_puis_ref_est_in20003561.html

The person who sold it to you may have done a prior BIOS update. It's worth noting that on the MSI MAG B550 Tomahawk, you can update the motherboard BIOS without a CPU or without a functional CPU. I'm not sure if this is the same case for the MSI B550M-A PRO. In these conditions, you would need to find a CPU from a previous generation, a Ryzen from the 3rd generation, for example, to put on the motherboard while performing the update.

--
To misname things is to add to the misery of the world (Albert Camus)
0