MSI B550M Pro VDH-Wifi CPU Ez Debug light on after moving pc hardware from one case to another.

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MaxVD

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Aug 13, 2024
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Hello, I am not sure whether I am in the right place or not for this question. But I was reading another issue similar to mine on this forum and tried the fixes recommended and it didn't work. This issue occurred strangely enough after I had switched cases for my pc. I built my own pc by ordering parts online and assembled a PC about 5 years ago. I constantly upgraded the thing to what it is now, just never the case. So 4-ish days ago my new pc case arrived (AQUA 3 Mini-Tower Case), and I got to it. I unplugged everything, unscrewed the mobo, kept the cpu and fan still installed but removed the GPU. Moved the mobo over to my new case and screwed it in. Plugged in the case wires, and screwed in my HDD to the bottom. Connected everything up the PSU and went to test it out. I turned it on and all the fans light up to my delight. GPU, CPU, Case fans, all were on. I could even hear my HDD turn on. But, no display... and I noticed that the light was on next to my CPU for ez debug on the mobo.

Things I tried:

Removing and re-inserting the CPU. The pins are untouched, wiped down with isopropyl alcohol, and the socket has no bent pins as well. There is no thermal paste in the way and the thermal paste I was using wasn't conductive.

Taking the little battery out for over 5 minutes for the BIOS settings to reset.

Tried flashing bios on a flash drive and it went through but no display after and issue was the same. Yes I did it with no CPU in, no RAM in, no cables from the case in, no sata cable in, no ram or GPU. Simply put, it was the mobo, flash drive, 24 pin, and 8 pin for CPU. I was sure I did it right because I watched Mike's Unboxing youtube video showing how to do it for the exact motherboard.

Tried booting with just the cpu and a ram stick in (in the 2 slot).

All of these attempts resulted in white led CPU ez debug.

I am convinced something shorted, since I did not take the cpu out for the original transfer and do not know how to test out if either are broken since I do not have a spare for the mobo or the cpu. I don't think the mobo is shorted because there are other components turning on through the mobo, but I am not sure this is how it works.

Idk what this looks like to you guys, but I am running out of options and don't know the next step of approach.

My specs:
GPU ----- 1660 Super 3 Fan Gigabyte 3 years old
CPU ----- Ryzen 5 5600 2 years old
MOBO -- MSI B550M Pro VDH - WIFI 2 years old
SSD ----- Samsung 500GB Internal PCIe (Boot drive is located here)
HDD ---- Some Barracuda 1TB thing from 2019
RAM ---- Corsair 4x8gb Vengeance DDR4 3600Mhz
PSU ----- 850W Gold 90

Sad about this, Should I give it a shot to move whole pc back into old case? Is it even worth it at this point, since I tried to boot pc without even being in a case and it gave me cpu ez debug?
 
Hello

I would suggest that you do the cardboard test. Take everything out of the case and reassemble it and test. Also you may want to take a good look at the mobo while it is out of the case..


@Bruce @PeterOz
 
Hey Veeg,

I have done this a couple of times, taking it apart and building it again! Even tried building it in the old case to see if that made a difference.

As to the mobo inspection, what should I be looking for visually? This has an AM4 socket so the pins are all on the cpu, and the ones under the socket lock are barely visible to the eye. The ram slots are clean and clear, same goes for gpu - which turns on when I turn on pc. I do not know what to do.

Thanks,
Max
 
So you already re-assembled the parts outside the case, OK.
And you have done all the things one would suggest - only one RAM stick, in different slots, no unnecessary components, etc.
On that point, did you leave off all but the boot drive, no keyboard/mouse, no DVD - that sort of thing?
Just bare-bones - enough to show a signal on the display - even an error message.

To confirm, no parts were changed, just the case?
 
Bruce said:
So you already re-assembled the parts outside the case, OK.
And you have done all the things one would suggest - only one RAM stick, in different slots, no unnecessary components, etc.
On that point, did you leave off all but the boot drive, no keyboard/mouse, no DVD - that sort of thing?
Just bare-bones - enough to show a signal on the display - even an error message.

To confirm, no parts were changed, just the case?
Click to expand...
Hi, Thank you for the response!

What parts should I keep plugged in to do the bare bones attempt to get a signal to display like an error message.

No parts of the hardware I listed were changed. But the new case has one of those little mobos on the back for the fans/fan rgb that I had to plug into my mobo and PSU.
 
PeterOz said:
5600 G or X or XT?
If G remove graphics card and test - after doing the list from Bruce
Click to expand...
Its just a plain 5 5600! Here is the link: https:

//www.amazon.com/AMD-5600-12-Thread-Unlocked-Processor/dp/B09VCHR1VH
 
Yep, anything conductive, I use a screwdriver all the time.

As to the bare bones on a piece of cardboard; just motherboard, processor & cooler, one memory, and power supply unit. Then graphics card if processor/mobo doesn't have onboard graphics.
So, no keyboard, mouse, or boot drive.
If the system works, it'll detect no boot drive, no keyboard, that sort of thing, but actually show those messages on the monitor.
If that shows nothing, you have deeper issues, like a dead mobo but maybe processor or memory. So try another memory stick, in another slot and cross fingers.
 
Yeah unfortunately that does not work. Booted with no boot drive connected to the pc, CPU plugged in, Gpu in because CPU has no onboard graphics, one stick of ram. No keyboard, mouse in.

Going to take to the IT shop near me.
 
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