Bootloop w/ crash at Q Code D0

[Hydrogenior]

Hello,

 

yesterday I tried to overclock my Threadripper 1950X using Ryzen Master Software.

I am using a zenith extreme mainboard with a custom loop with two 280 radiators, so cooling shouldn't be an issue.

I had set the voltage to 1.4 as I've read that that is the maximum safe voltage for Threadripper. I didn't intend to leave it at this high for extended periods, just for some benchmarking.

From there I started with 4 GHz and ran 3D Mark and then increment in 0.025 steps. When I reached 4.2 GHz it crashed the PC.

It then went into a bootloop and I won*t even POST anymore. It always stops at Q-Code D0, which the Internet says is CPU Initialization failed.

I tried removing all but one stick of RAM and tried different sticks in every slot without success. I also took a known good stick from another system which produced the same error.

Resetting CMOS didn't help. Using the Safe Boot button or the retry button also didn't help.

Disabling the GPU didn't change the Q-Code, trying to POST without any RAM resulted in a different Q-Code, which is expected, I guess.

 

Does any of you have any other ideas what I can try before ordering a new CPU?

 

Full system specs:

ASUS Zenith Extreme

Threadripper 1950X

4x8 GB G.Skill Trident Z RGB 3200 CL14

ASUS Poseidon GTX 1080 Ti

Samsung 960 EVO M.2 1 TB

be quiet! Dark Power Pro 1000W

 

Cooling is done with a EK Monoblock in a custom loop with two 280 radiators.

 

Thank you very much.

 

Edit:

The GPU ran at stock speeds and the RAM was set to its XMP Profile (3200 CL14)