i9 9900K + AsRock Z390M Pro4 issues

[Echsenmensch]

I get random systemwide freezes (if sound played there is a buzzing sound), resulting in sometime a starting bluescreen which is then cut off, a bluescreen (dumpfile is referencing a random process), or a freeze with buzzing noise (if sound was playing) which sometimes needs manual cutoff or just restarts itself. As I've read that the VRM cooling on this mothermoboard is not exceptionally good, I came up with the conclusion that the motherboard does a thermal shutdown because of overheated mosfets (there is no reading of the mosfets in HWinfo, so I guess the VRM sensor is only used to determine overheating and not when to thermal throttle; this can be done using hardware only). 

Things I did:

reinstalled windows 2x

reinstalled most drivers

checked event viewer

checked monitoring while freeze using second monitor

tried with a different PSU, didn't start at all

analysed dmp files (just to see if there's a particulary bad process which is responisble; there isn't)

ran kombustor CPU burner: no issues execpt high cpu temps (+- 100°C)

analysed RAM, no issues

run kombustor stresstest, no graphic issues

diagnosis of memory - FAILED with memtest 86, passed with windows

 

My Setup is:

i9 9900K

AsRock Z390M Pro4

4x4 Corsair 2666

GTX 1080 8gb + Quadro K4200 4gb (working properly, not causing problems)

BeQuiet E9 CM 480W (shouldn't be the issue eigher as it happens anytime, not only when power is needed)

2x 180mm fans, 220m3/h intake

Shadow Rock bequiet! +1 intake blowing air to VRM/CPU

disabling turbo boost

 

my cooling isn't finished yet.

 

could anyone help me determine the problem? I am not defenitely sure yet, and wanted to get some advice before buying a new motherboard.

thank you in advance!

 

++++++++++++++++++++++++++++++++++++++++++++++++++++++

 

Follow up:

It turnd out it was a bad memory stick; I firstly trusted the microsoft memory diagnosis tool which showed no errors, while the memtest 86 showed me multiple errors. I am now running on 8 GB until my new units arrive (2x4GB), without any issues so far.

 

Thanks for all the answers providing advice and knowledge for me! 

[Mateyyy]

Have you tried reverting any sort of overclocks (if you had any) and disabling Turbo Boost and C-states? 

Regardless of your motherboard, I can't help but at least suggest you get a new PSU. That's a 7-8 year old unit at this point and I don't think 480W is enough anyway for that system running at full load.

 

And I've just now noticed that you mentioned that your CPU spikes to 100C at full load. Which exact Shadow Rock do you have (since there are a few) and what does the fan placement look like in your case?

[Echsenmensch]

I already disabled Turbo Boost and SpeedShift, it occured aswell. I did no overclock, as 5 GHz are still more than enough. I do know that the cooling of the cpu is extremely bad, and I'm planning getting eigher a AIO or th Noctua NH -15. I diagnosed the memory with the windows diagnosis tool, and it showed me that everything was ok. As mentioned I tried it with a new PSU, but it wouldn't start (I think the high current protection kicked in which led me to think of a failing part in the mb as the psu was alright). I'll probably try another one. As I have poor airflow in general (CPU cooler blocks it because its crosswise to the flow) and there are no readings for the vrm's so no software is able to throttle because the thermal protection is all hardware, it will probably just shutdown instead of throttling the cpu. Can you suggest how I can get the VRM's hot on purpose?

 

Would you suggest enhancing core voltage? This is my first PC with decent power, so I'm not touching anything yet

[xg32]

480w psu is on the low side, vrm temps is also likely an issue.

[Echsenmensch]

On 1/25/2020 at 7:53 PM, Echsenmensch said:

Hello again;

Thanks a lot for the aswers!

I recently made another Ram Test; which failed every single time. I now have bought new Ram, a new PSU is incoming aswell (Patriot Viper 4000MHz, HX850i). But as the LC-Power PSU - 850W - wasn't able to get my system to run (it clicked when I pressed the start buttom, after that nothing happened... I wasn't able to just power graphics either), I am now concerned that my motherboard has a failing part as my current PSU doesn't have overvoltage protection (it has overamp protection though, so it could also be that the start voltage peak was just too high for LC Power's overvoltage portection); and if I plug in my new RAM it'll get damaged aswell. Are my concerns valid? Should I wait for the HX850i?