Question MSI X570-A No POST after reboot - all RGB, fans working, no debug light, no display

[ginkitty79]

Mobo: Asus X570-A
CPU: Ryzen 3700x
GPU: Radeon 5700xt Sapphire Pulse
RAM: XPG D10, 2x 16gb DDR4 @ 3200mhz
PSU: EVGA 650W Gold


Hello all, two days ago I restarted my PC after a GPU driver update and it will no longer POST. As far as I can tell, POST gets up to the GPU (fans & RGB turn on) then gives up. The USB ports function, as in they provide power, but my IO devices are not initialized - no RGB on mouse or keyboard.

Most curiously, none of the EZ debug lights are on. They flash in a sequence during bootup (RAM DRAM VGA then CPU), which to my knowledge is normal and should mean it's successfully passing POST. I'm fairly certain this system is working correctly as during troubleshooting I didnt seat a RAM stick properly and the DRAM light came on. Unfortunately I do not have a motherboard speaker, but I'm not sure what that would tell me that debug lights can't.


Things I have tried:
Unplugging ALL peripherals
Power drain (30 seconds, 5 minutes, 2 hours)
CMOS reset (power drained and shorted jbat1)
RAM Reseat (normally in 2 and 4, tried one stick in 1 and 3, no dice)
GPU reseat
PSU reseat (all cables)
Reseating all cables on motherboard
Booting PC with GPU removed
Moving GPU to second PCI-E slot
Removing everything from board except storage, CPU, RAM
Lighting incense and praying to the machine spirit (just kidding)


I built this PC five years ago, so this may just be a symptom of age, but I really feel like I've tried everything to figure out the problem component. Any help or insight would be greatly appreciated, thank you for reading and have a fantastic day.

 

[Lutfij]

Welcome to the forums, newcomer!

PSU: EVGA 650W Gold
EVGA is the brand of the unit while 650W is the advertised wattage of the unit. What is the model of your unit and it's age? 5 years? If so, source(borrow, not buy) another unit that's reliably built and see if that helps resolve the issue.

Mobo: Asus X570-A
You sure about the make and model of the motherboard? I can't seem to find it off a Google search.

 

[ginkitty79]

Welcome to the forums, newcomer!

PSU: EVGA 650W Gold
EVGA is the brand of the unit while 650W is the advertised wattage of the unit. What is the model of your unit and it's age? 5 years? If so, source(borrow, not buy) another unit that's reliably built and see if that helps resolve the issue.

Mobo: Asus X570-A
You sure about the make and model of the motherboard? I can't seem to find it off a Google search.

Apologies, I had accidentally posted a draft of my post.

Motherboard: MSI X570-a PRO
PSU: EVGA Supernova Nex650G

I will try to source a power supply and report back if that solves the issue. Thank you for the response.

 

[ginkitty79]

EDIT:

Figured it out! Mobo got fried. Was difficult to tell due to the black PCB, but there were some oily looking dark spots on the underside of the board where the VRM and IO array is. Returned PSU, got a new mobo and everything has been smooth sailing.

--old

EVGA is the brand of the unit while 650W is the advertised wattage of the unit. What is the model of your unit and it's age? 5 years? If so, source(borrow, not buy) another unit that's reliably built and see if that helps resolve the issue.

Mobo: Asus X570-A
You sure about the make and model of the motherboard? I can't seem to find it off a Google search.

I went and picked up a new 750w, my only option unfortunately.. Also took everything out of the case and laid it out on a table - the issue is still occurring with just Mobo, RAM, CPU (which I have since reseated), and new PSU.