X670E Taichi crashes / reboots

Good luck with the RMA. Unfortunately things like this happen, it's why the RMA
system exists. Hopefully the replacement sorts out your issues.

TomH wrote: RMA X760E Taichi Carrara motherboard arrived last week. It came with recent 1.24 BIOS. Under testing. It seems to run with and without crash as expected. AMD 7950X is incompatible with C-State. Once I disable Global C-State in BIOS, no more crash so far. Will see.

Hi there
The problems your having Seems very similar to this thread :

https://forum.asrock.com/forum_posts.asp?TID=25386&PN=1&title=x670e-taichi-cant-run-stable-with-acpi-cstates

lush wrote: Same problem here - I just built a new system with a Ryzen 7950x and x670e Taichi on the latest BIOS 1.21, and I am getting random restarts after a cold boot. I do not get a BSOD, just a black screen and hard restart happening mostly just after logging in to Windows (after <1 min), or very rarely when system is idle. After restarting, the system is quite stable, also passing synthetic benchmarks. What can be done to resolve the issue?

I've got this same problem ever since it started 2 months ago.
Worked just fine until recently it does exactly same - black screen with no BSOD or anything bug related.

I'll just post my rant from other forums :

AMD Ryzen 7950X3D

Water cooling SMX AiO 360mm

Asrock Taichi Carrara X670E

Lexar 32GB RAM 6400

MSI RTX4070TiSuper Gaming X Slim

Fortron Hydro PTM PRO 1200W ATX 3.0

WD Black/Crucial P5 2TB SSD and one 3,5" 4TB HDD.

Everything ran smoothly throughout 1,5 years
(ofc thermal paste was being exchanged + compressed air cleaning)
Until I've encountered a problem where computer randomly, during first minutes of playing the game (Dead by Daylight mostly) or a little later just "turned off" - screen went completely dark, I could hear my friend from Discord going in the background
(but he couldn't hear me mostly, separate mic from the headset) yet the rest of the config seemed to work just fine/didn't turn off completely since fans and the rest were still working.

[https://youtube.com/shorts/viG-Wry2R-A?si=7trg5Ha8OEnEM0En](https://youtube.com/shorts/viG-Wry2R-A?si=7trg5Ha8OEnEM0En)

I've tried some troubleshooting alongside reading previous posts about similar problems which led me to Steam configuration doing something buggy in Windows 11 and AMD C-States being turned on allowing parts to go into idle state.

I did everything step by step, also upgraded BIOS versions to the latest one (going through older versions first) 2 months ago in June (when it first happened)+ also restarted mobo with battery CMOS button.
(?? itself is hidden on the plate)

That seemed to do the trick and PC was working just fine until 2 days ago where the problem has occured again.
I've tried to reset BIOS settings to default, which seemed to not work and since then PC can be booted, I'll be able to use it for few minutes then it crashes without any BSOD into black screen or after rebooting goes in loops/with fans working fine or very loud.

[https://youtube.com/shorts/l16Xiv4PChY?si=qAUDOzkef3Jt3NEp](https://youtube.com/shorts/l16Xiv4PChY?si=qAUDOzkef3Jt3NEp)

[https://youtube.com/shorts/iY9ftNFPul4?si=aMovFf67k_kmwA2p
](https://youtube.com/shorts/iY9ftNFPul4?si=aMovFf67k_kmwA2p)

This is just unbelievable that something like this happens to a hardware that pricey!
And not even to mention We are mostlyadvanced people in that field, yet motherboards and any other stuff can come back unrepaired/symptoms not found cause RMA handling if the distribution centers in Europe are pure joke!
If this doesn't get fixed I'm really gonna change my view and how I will recommend Asrock as a company to choose when it comes to building PC.