Asrock Taichi 570 and Tech Issue

Hi there, I have a Arock Taichi 570 with a Ryzen 3950x, Corsair Vengence 32gb x 2 and Asus 2070 Super video card.

A few months back my PC was off and wouldn't post so I tried the usual things of reseating ram, video card, cleaning PC etc but had no luck but managed to get it working after some ram reseating for the 3rd or so time. So it worked ok for a few months

A few dyas ago however it had done the same thing. Also managed to get it going again.

But now I am having no real luck. If I do get it up, it will only last maybe 15 mins or so.

What it will do is go to boot up and immediately shut off. I have tried changing the ram module, removing the video card completely to cancel that out, and seems that the issue is either the motherboard, ram (unlikely since both modules I have do the same thing, it would prob be unlikely that both are problematic) or the CPU itself. You would think if the CPU is bad that it would just simply not work at all, so it probably leaves the PSU or the motherboard.

If I was to come to a conclusion, I would lean on it being a motherboard but maybe other people have some ideas?

I am so tired as been on my feet trying to work this out for the last 16 hours straight so I apologise if I am not making any sense and appreciate any help.

If its the motherboard bad for certain, I'd just go out and buy another one but would rather know for certain.

Many thank for anyone can help assist working out what the issue might be. If I had spare parts I would be able to narrow it down but I moved from using a notebook for 15+ years to a desktop.

Testing another PSU is always cheaper and easier than RMAing the CPU. I would give
it a shot regardless before RMAing the CPU. Without knowing the PSU you are using
I will suggest double checking your connections, make sure you have the correct
8 pin CPU power connector in use (4+4 not 6+2). If that all checks out, try another
PSU, even a cheap unit (not a brandless though). All you need is to determine if
the symptoms remain the same or go away.

My x570 Taichi's onboard power and reset don't light up at all, I don't think they are backlit. I may have a different revision though, I got mine at launch.