[SOLVED] MSI EZ-Debug CPU Light On

[LegoRoboto]

Second build ever, so trying to learn the proper way to debug these things.

SYSTEM:
Motherboard: MAG B550 Tomahawk
CPU: Ryzen 7 3700X
Graphics Card: XFX AMD Radeon™ RX 5700 XT 8GB GDDR6 THICC III Ultra
RAM: 2X 8GB Corsair Vengeance 3200 DDR4


SYMPTOM:
Fans turn on but the EZ-Debug CPU light is on and nothing appears on screen.

ATTEMPTED:

1. Reseated CPU applying pressure as I activated lever
2. Reconnected CPU 8 Pin cable
3. Removed all RAM except in DIMMA2

So far all of this has yielded the same result. Would love to learn what else may work. Thank you all for the support, I am excited to get this build up and running!

 

[Kakuri]

Second build ever, so trying to learn the proper way to debug these things.

SYSTEM:
Motherboard: MAG B550 Tomahawk
CPU: Ryzen 7 3700X
Graphics Card: XFX AMD Radeon™ RX 5700 XT 8GB GDDR6 THICC III Ultra
RAM: 2X 8GB Corsair Vengeance 3200 DDR4


SYMPTOM:
Fans turn on but the EZ-Debug CPU light is on and nothing appears on screen.

ATTEMPTED:

1. Reseated CPU applying pressure as I activated lever
2. Reconnected CPU 8 Pin cable
3. Removed all RAM except in DIMMA2

So far all of this has yielded the same result. Would love to learn what else may work. Thank you all for the support, I am excited to get this build up and running!

I Got the exact same problem and i dont know what to do. Have you figured it out or?

 

[John Chesterfield]

Second build ever, so trying to learn the proper way to debug these things.

SYSTEM:
Motherboard: MAG B550 Tomahawk
CPU: Ryzen 7 3700X
Graphics Card: XFX AMD Radeon™ RX 5700 XT 8GB GDDR6 THICC III Ultra
RAM: 2X 8GB Corsair Vengeance 3200 DDR4


SYMPTOM:
Fans turn on but the EZ-Debug CPU light is on and nothing appears on screen.

ATTEMPTED:

1. Reseated CPU applying pressure as I activated lever
2. Reconnected CPU 8 Pin cable
3. Removed all RAM except in DIMMA2

So far all of this has yielded the same result. Would love to learn what else may work. Thank you all for the support, I am excited to get this build up and running!

Can you try with a different graphics card? I only say that because I know the CPU LED is on, but that can sometimes be a bit of a misnomer. I also say that because aside from your graphics card, you have an extremely similar setup to mine, bar the graphics card.

 

[LegoRoboto]

Can you try with a different graphics card? I only say that because I know the CPU LED is on, but that can sometimes be a bit of a misnomer. I also say that because aside from your graphics card, you have an extremely similar setup to mine, bar the graphics ca

I don't have a second graphics card, but I tried just pulling the graphics card and got nothing.

 

[John Chesterfield]

I don't have a second graphics card, but I tried just pulling the graphics card and got nothing.

You won't get anything, the 3700x does not have an integrated GPU. Can you not borrow a card for testing? Also, what brand and model is your power supply? Not just wattage needed here.

 

[LegoRoboto]

Using an EVGA 750 B5.
Just tried pulling the motherboard out and reseating all the components. Still getting the CPU debug light.

Here is my full build:
https://pcpartpicker.com/list/hCtJFG

Thank you again for the help, this is rather stressful with $1500 worth of parts just sitting here! I don't have access to a card for testing right now. Might be able to borrow a card from work later today. I will try to make that happen.

 

[LegoRoboto]

After Reseating the graphics card for what feels like the 100th time i got it to so the boot light is showing on the MOBO. Now going to reinstall in case and see if I can get things moving.

Will update with results!

 

[LegoRoboto]

I AM POSTING THIS FROM MY NEW PC! I think it must have been a graphics card issue, as well as being patient and letting the system boot all the way. For others finding this make sure to let those LEDs settle before shutting the system back off. I got nervous and powered it down too soon I think.

 

[LegoRoboto]

Thank you again for the help!

 

[John Chesterfield]

Hey you're more than welcome. I know that the B550 Tomahawk has one or two niggles with the initial BIOS when it comes to graphics cards, mine will give 1 long beep and 3 short beeps if my monitor isn't switched on, believe it's a DisplayPort issue that has been resolved with later BIOS versions.

But really glad you've got the system up and running!

 

[TigerJack88]

Hi all,
is the fist time for me here so sorry if it's not the right place:
I just assembled my new computer:
CPU: Ryzen 5 5600x
MOBO: MSI B550 Tomahawk
GPU: PSY Geforce GTX 1660Super
RAM: Crucial Ballistix BL2K12G36C16U4R 3600MHz slots: DIMMA2 - DIMMB2

The same problem it's happening to me: After I installed everything the computer booted but it was using the RAM at 2666Mhz.

Attempts:
I tried to activate XMP and the computer stopped booting: fans spinning no signal on the monitor. CPU led on the MOBO, fix red
I rebooted the CMOS from the jumper as instructed in the manual
I changed manually the RAM frequency to 3600MHz in the BIOS. the rest was left in auto. The computer worked and rebooted for a couple of days.
Today I turned on my computer again and it is not booting again, CPU led on the MOBO fix red.

Today I will try to update the BIOS but I don't understand why I'm having issues using the ram at 3600Mhz since everything is compatible.

Thank you for your help. tell mi if you need more details.
Bye

 

[Krotow]

I just assembled my new computer:
CPU: Ryzen 5 5600x
MOBO: MSI B550 Tomahawk
.....
The same problem it's happening to me: After I installed everything the computer booted but it was using the RAM at 2666Mhz.

Attempts:
I tried to activate XMP and the computer stopped booting: fans spinning no signal on the monitor. CPU led on the MOBO, fix red
I rebooted the CMOS from the jumper as instructed in the manual
I changed manually the RAM frequency to 3600MHz in the BIOS. the rest was left in auto. The computer worked and rebooted for a couple of days.
Today I turned on my computer again and it is not booting again, CPU led on the MOBO fix red.

Today I will try to update the BIOS but I don't understand why I'm having issues using the ram at 3600Mhz since everything is compatible.

Thank you for your help. tell mi if you need more details.
Bye

I just assembled my new computer:
CPU: Ryzen 5 5600x
MOBO: MSI B550 Tomahawk
.....
The same problem it's happening to me: After I installed everything the computer booted but it was using the RAM at 2666Mhz.

Attempts:
I tried to activate XMP and the computer stopped booting: fans spinning no signal on the monitor. CPU led on the MOBO, fix red

Update BIOS. This will fix non-working RAM OC, missing NVMe drives and Ethernet reboot glitch.

By the way seems all new MSI B550 MOBOs with Zen3 CPUs need BIOS update. My brand new MSI MPG B550 Gaming Edge WIFI had exactly this problem. BIOS update instantly fixed that.

 

[TigerJack88]

Update BIOS. This will fix non-working RAM OC, missing NVMe drives and Ethernet reboot glitch.

By the way seems all new MSI B550 MOBOs with Zen3 CPUs need BIOS update. My brand new MSI MPG B550 Gaming Edge WIFI had exactly this problem. BIOS update instantly fixed that.

Thank you!

 

[TigerJack88]

Update BIOS. This will fix non-working RAM OC, missing NVMe drives and Ethernet reboot glitch.

By the way seems all new MSI B550 MOBOs with Zen3 CPUs need BIOS update. My brand new MSI MPG B550 Gaming Edge WIFI had exactly this problem. BIOS update instantly fixed that.

Yesterday I updated the BIOS to the version:
- Updated AMD AGESA ComboAm4v2PI 1.1.0.0 Patch C

I had to change the RAM frequency manually anyway but now there are not leds on the mobo.
thank you for your help I will update you if something changes

 

[Krotow]

If you will succeed, mark thread as solved.