Question CPU EZ Debug Light On When Using Ryzen 7

[MonkeyRocks23]

I recently purchased a new motherboard (MSI B550 Gaming Plus), yet upon reinstalling everything, I was met with the white EZ Debug led stuck in the "CPU" position (Attempting to use a Ryzen 7 5800x). My first thought was to flash the bios, yet even after updating to the most recent version, the led remains on and I am unable to post. I have tried switching to an older cpu (Ryzen 5 3400g), and that seems to allow me to boot into the bios and ultimately windows. Using this cpu, I have confirmed that the BIOS did indeed update successfully and should work with my Ryzen 7 5800x. I have tried absolutely everything from swapping the ram orientation, resetting cmos, different psu cables, checking connections, re-seating cpu, trying an older version of bios, etc. Additionally, I purchased a new Ryzen 7 5800XT going off the assumption that the cpu died, however this does not fix the issue. It is important to note that there is some thermal paste covering the cpu socket, but I doubt this would effect anything. Could there be an issue with the motherboard even though the Ryzen 5 works perfectly fine? Any suggestions help.


SPECS:

MSI B550 Gaming Plus (upgraded from Gigabyte GA A320m-s2h)

Ryzen 7 5800x cooled with Thermalright Peerless Assassin RGB

32gb Corsair Vengeance RGB pro

Zotac RTX 3070ti

Corsair RM850x modular power supply

 

[Lutfij]

Welcome to the forums, newcomer!

MSI B550 Gaming Plus (upgraded from Gigabyte GA A320m-s2h)
First off, did you reisntall your OS once you swapped motherboards?
My first thought was to flash the bios, yet even after updating to the most recent version
Second, while you're on the B550 chipset motherboard, what BIOS version did you flash to?

Did you clear the CMOS after verifying that your motherboard BIOS was successfully flashed?
You're advised to disconnect from the wall and display, then remove the CMOS battery, then press and hold down the power button for 30secs to drain any residual power, then replace the battery after 30mins.

It is important to note that there is some thermal paste covering the cpu socket, but I doubt this would effect anything.
You shouldn't be running into any issues.

You might want to drop the processors onto a know working motherboard(besides the one you have, a friend or neighbors) to rule out your processors being DoA(which is highly unlikely but we've seen strange things.

from swapping the ram orientation
Rams should be in slots A2 and B2 if using a 2x ram kit.

 

[MonkeyRocks23]

Welcome to the forums, newcomer!

MSI B550 Gaming Plus (upgraded from Gigabyte GA A320m-s2h)
First off, did you reisntall your OS once you swapped motherboards?
My first thought was to flash the bios, yet even after updating to the most recent version
Second, while you're on the B550 chipset motherboard, what BIOS version did you flash to?

Did you clear the CMOS after verifying that your motherboard BIOS was successfully flashed?
You're advised to disconnect from the wall and display, then remove the CMOS battery, then press and hold down the power button for 30secs to drain any residual power, then replace the battery after 30mins.

It is important to note that there is some thermal paste covering the cpu socket, but I doubt this would effect anything.
You shouldn't be running into any issues.

You might want to drop the processors onto a know working motherboard(besides the one you have, a friend or neighbors) to rule out your processors being DoA(which is highly unlikely but we've seen strange things.

from swapping the ram orientation
Rams should be in slots A2 and B2 if using a 2x ram kit.

I did not reinstall the OS upon switching motherboards as I was under the impression that it was not necessary. Additionally, to do this I would need to keep the older cpu in temporarily. Is this something you would recommend?

I have cleared the cmos multiple times and via different methods (removing battery, touching pins together) and this does not seem to solve the issue.

I am currently unable to try a different motherboard, so unfortunately this step may have to wait.

As for the ram, I have effectively removed them from the list of possible problems as I have attempted to boot with every possible ram location.

I am very interested as to what the issue could possibly be seeing as I have confirmed a BIOS update, yet the motherboard only works with an older generation cpu despite trying a never touched before Ryzen 7 5800xt. Thank you for the help