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Hi, I decided to upgrade my pc with a new cpu, motherboard and ram and move it to a new, nicer case. Unfortunately the motherboard got bricked after a failed bios update so i got it replaced and there were no problems updating the bios on the replacement board. I installed a fresh copy of windows after installing the new parts and started installing all of the software (steam, discod etc) before i was even done installing the software the computer BSOD already with whea_uncorrectabe_error. I downloaded all of the windows updates and updated all of my drivers but the computer kept crashing with the same error code. I thought that maybe the cpu or the ram were faulty so i got them replaced (the store i bought them from offers same day replacement if a part is faulty) even after replacing the parts and reinstalling windows again, the bsod kept happening. Sometimes it could run for 30 hours with me gaming, watching movies or stress testing the pc without a crash and then right after that it could randomly crash few times in a row within minutes of each other. The computer runs perfectly fine booted into safe mode with networking so i think i can rule out any hardware problems. I ran sfc /scannow and checked the disks - no errors whatsoever. I've been closely monitoring the temps as well and idle it never goes above 30C and under load it never goes higher than around 80C or so. I also tried just running it with a fresh windows install without anything installed on it to see if maybe it's some software but it would crash even in a fresh install. Please someoe, help me, I have absolutely no idea what could be wrong with the computer and i've been trying to fix it for over a week now and i really need to get it fixed asap as i need it for work. Here are the dumps from the most recent blue screens and the perfmon report -  https://drive.google.com/drive/folders/1JH2welPjSnTcwDRbsCaQkvERhOP5xrXG?usp=sharing

 

  • OS - Windows 10 Home x64 installed using a USB installer made by the windows tool
  • CPU - i9 9900KS 
  • RAM - 2x16GB Corsair Vengeance RGB PRO 3200Mhz (CMW32GX4M2C3200C16)
  • MotherBoard - MSI z390 gaming pro carbon
  • GPU - EVGA GTX 1080ti SC
  • CPU cooling NZXT Kraken x62
  • Power Supply - Corsair RM850i 850W
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Did you touch any settings in BIOS? "whea_uncorrectable" usually means the CPU is unstable and since the 9900KS runs at 5Ghz All-Core then maybe MSI messed up on stability, you could try setting a custom overclock.

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6 minutes ago, _Syn_ said:

Did you touch any settings in BIOS? "whea_uncorrectable" usually means the CPU is unstable and since the 9900KS runs at 5Ghz All-Core then maybe MSI messed up on stability, you could try setting a custom overclock.

If you search for "9900ks" BSOD you'd see a lot of MSI boards having similar issues or even other boards but it's mostly MSI.

MSI Related Articles:
https://forums.tomshardware.com/threads/bsod-i9-9900-ks-with-msi-meg-ace-z390-help-needed.3543440/

https://linustechtips.com/main/topic/1143557-bsods-and-dont-know-why/

https://www.reddit.com/r/intel/comments/efy3bk/constant_crashingbsod/

https://answers.microsoft.com/en-us/windows/forum/all/new-pc-blue-screening/a250b7d2-d606-4e6d-b6d1-de2323453139

https://forum-en.msi.com/index.php?topic=327051.0

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1 minute ago, _Syn_ said:

I see, what would you recommend then? Should i return the motherboard i have now and get a different one that has been tested to work well with the 9900ks?

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11 minutes ago, Chixoe said:

I'm currently on 7B17v171(Beta version), before updating to it i tried 7B17v16 and i had the exact same issue with both of them

15 minutes ago, Chixoe said:

I see, what would you recommend then? Should i return the motherboard i have now and get a different one that has been tested to work well with the 9900ks?

The 9900KS is relatively new and those are the only two versions that support it and one of them is Beta, you could try reporting that issue to them and wait it out, which I consider a bit risky since communication between customer support and software engineers is usually awful or you could try setting a custom overclock or adjust LLC (Load Line Calibration) and see if that helps, LLC changes how the CPU voltage behaves on Idle and Under Load which is important for stability.

If the board is still returnable I think that would be the preferred option, an unstable BIOS is inexcusable, especially since it's been 3 months.

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The board is still returnable as i just bought it recently. i can drive down to the store and get it returned and buy a different board instead. Could you maybe recomment me a board that is most likely to work well with the 9900ks ?

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I'm guessing i should avoid msi boards then?

3 minutes ago, _Syn_ said:

The 9900KS is relatively new and those are the only two versions that support it and one of them is Beta, you could try reporting that issue to them and wait it out you which I consider a bit risky since communication between customer support and software engineers is usually awful or you could try setting a custom overclock or adjust LLC (Load Line Calibration) and see if that helps, LLC changes how the CPU voltage behaves on Idle and Under Load.

If the board is still returnable I think that would be the most preferred option, an unstable BIOS is inexcusable.

 

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2 minutes ago, Chixoe said:

The board is still returnable as i just bought it recently. i can drive down to the store and get it returned and buy a different board instead. Could you maybe recomment me a board that is most likely to work well with the 9900ks ?

dial in a static overclock, 4.7ghz 1.25v and see if that fixes it till a bios comes around.

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2 minutes ago, Chixoe said:

The board is still returnable as i just bought it recently. i can drive down to the store and get it returned and buy a different board instead. Could you maybe recomment me a board that is most likely to work well with the 9900ks ?

Hmm I'm not very familiar with Z390 boards, though I do trust ASUS just for having a nice BIOS, though before sticking with that conclusion try changing LLC.

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Just now, _Syn_ said:

Hmm I'm not very familiar with Z390 boards, though I do trust ASUS just for having a nice BIOS, though before sticking with that conclusion try changing LLC.

shame the asus VRMs are trash on the z390 boards.

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39 minutes ago, TrigrH said:

dial in a static overclock, 4.7ghz 1.25v and see if that fixes it till a bios comes around.

So far the system has been running fine for around 35 minutes with the static oc. I'll keep it running for few hours now and see if it fixed it for now until a new bios rolls out. Thanks a lot, i'll keep you updated. If it doesn't solve the issue i think i'll refund this board and get a new one. You said asus has trash VRMs on the z390 boards? What about gigabyte? Or just a different MSI board that supports the 9900ks a bit better?

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16 minutes ago, Chixoe said:

So far the system has been running fine for around 35 minutes with the static oc. I'll keep it running for few hours now and see if it fixed it for now until a new bios rolls out. Thanks a lot, i'll keep you updated. If it doesn't solve the issue i think i'll refund this board and get a new one. You said asus has trash VRMs on the z390 boards? What about gigabyte? Or just a different MSI board that supports the 9900ks a bit better?

what store and location?

 

edit:

my pick: https://www.ebay.com.au/itm/293384051353/

it can even update the bios without a cpu.

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3 hours ago, TrigrH said:

what store and location?

 

edit:

my pick: https://www.ebay.com.au/itm/293384051353/

it can even update the bios without a cpu.

Thanks a lot for the suggestion. Hopefully I won’t need it though. So far so good, the system’s been running fine and stable for around 5 hours now under load all the time. I think it’s all good now. Thank you so much my saviour. I spent over a week driving around services and stores and rma’ing the parts and trying all sorts of things. It’s quite funny to think that such a small little thing as a fixed under clock would solve it

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4 hours ago, Chixoe said:

Thanks a lot for the suggestion. Hopefully I won’t need it though. So far so good, the system’s been running fine and stable for around 5 hours now under load all the time. I think it’s all good now. Thank you so much my saviour. I spent over a week driving around services and stores and rma’ing the parts and trying all sorts of things. It’s quite funny to think that such a small little thing as a fixed under clock would solve it

Just so you know you can set a fixed 5.0ghz if you want, you will need to adjust the voltage and load line calibration though.

 

The reason your PC was crashing before is cos the auto voltage settings couldn't keep your PC stable when it boosted to 5.0ghz.

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12 hours ago, TrigrH said:

Just so you know you can set a fixed 5.0ghz if you want, you will need to adjust the voltage and load line calibration though.

 

The reason your PC was crashing before is cos the auto voltage settings couldn't keep your PC stable when it boosted to 5.0ghz.

It runs perfectly fine now, that fixed it, it’s been running for 21 hours now under load with no problems. I think I’ll try setting it to 5.0 now, what voltage should i set? 1.3? 1.35? Thanks again for helping me, I was stuck with that problem for such a long time, and I completely dismissed the fact that it might be that from the beginning cause I thought that shouldn’t be a problem if msi says that the board supports 9900ks so I probably wouldn’t have tried it for another week or so if you didn’t tell me to and I’d be trying some other random stuff 

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3 minutes ago, Chixoe said:

It runs perfectly fine now, that fixed it, it’s been running for 21 hours now under load with no problems. I think I’ll try setting it to 5.0 now, what voltage should i set? 1.3? 1.35? Thanks again for helping me, I was stuck with that problem for such a long time, and I completely dismissed the fact that it might be that from the beginning cause I thought that shouldn’t be a problem if msi says that the board supports 9900ks so I probably wouldn’t have tried it for another week or so if you didn’t tell me to and I’d be trying some other random stuff 

Well 1.35v WILL work the CPU will most likely run too hot under that voltage you will need to experiment to find the right voltage for your CPU. Dont forget load line calibration (LLC), that setting keeps the voltage up when the cpu is under load.

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6 minutes ago, TrigrH said:

Well 1.35v WILL work the CPU will most likely run too hot under that voltage you will need to experiment to find the right voltage for your CPU. Dont forget load line calibration (LLC), that setting keeps the voltage up when the cpu is under load.

All right, I’ll experiment a bit now then. Once again, thanks a lot mate 

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Fuck was short bout opening  a Post cause same Problem.  New pc i9 9900ks in msi 390 carbon pro. And always bsods my last tought was cpu gets tk low vcore in idle.  Under work vcore is 1.35 all fine max Settings. But in idle one bsod after another. Pc is Brand nee good cooled with 850w 80+ Power.   Under idle i see dropin the vcore Down to 0.88 and then crash. Bios Settings are at Auto. And to be honest got no idea how to set fixe vcore and io or sa.

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