13900KS error 0xc0000005

[Pro40ne]

So  I already Rma ram so its ending with cpu issue (

my tabs crashing on different browsers(mozilla, edge, chrome) while browsing youtube, twitch, netflix etc.
CinebenchR23 crashing during cpu(single core) test on minimum test duration it active maybe for few seconds than error app or crashing with 0xc0000005 

[RandyT_Intel]

Hi @Pro40ne,

Thank you for posting here in our community. To effectively diagnose and address the issue you're experiencing, I kindly ask you to provide detailed responses to the following questions. This information will help us isolate the problem and determine the most appropriate course of action.  

• Have you made any software or hardware changes to the system recently? 
• Is there any physical damage to the system/processor? 
• Have you noticed any signs of overheating in the system? 
• Have you updated the BIOS to the latest version?
• Have you overclock the processor? Please note that if the system was overclocked, including voltage/frequency beyond the processor supported specifications, your processor voids warranty. 

I look forward to your response and am committed to resolving your issue promptly. 

Regards,  

Randy T.  

Intel Customer Support Technician  

[Pro40ne]

Hi @RandyT_Intel 
Thanks for reviewing my ticket.

● I have issued problem with pc and with troubleshooting it found few problems.
- memtest64 found errors during test so I used my warrenty to get replacment, after that did memtest64 again for 8h no errors
- ssd life was 0 samsung 990pro they had issues with that till driver update, so i used my warrenty to get replacement.
- fresh windows but had issues with blue screen during installation so lowered clocks to the p and e cores and windows installation was working fine after that.

● no physical dmg seen on the motherboard, gpu, cpu, memory, ssd, psu.
● using arctic 420 liquid freezer ii not thermal throtalling or heating seen on pc during multi core test hwinfo used for monitoring
● bios updated to latest supported by motherboad version 1820
Had the motherboard and cpu since jan 23 before updates implanted for the issues with 13900ks
● never even try to overclock since it came default full limit till when it had 320 on short and long till bios update that implanted to reduce it to 253 and 307A with enforcing limits

[Davu]

Hey, listen — these motherboards, especially the high-end ones (and particularly ASUS ROG), can be dangerous. They don’t want to fall behind in benchmarks, so to boost performance and sales, they push CPUs hard even without manual overclocking. For example, my friend had a ROG board that was sending 1.7V to his 14900K by default. With those settings, it’s obvious the CPU would degrade over time. Basically, they apply aggressive settings as if you were overclocking — but without you actually doing it. And just so you know, the default settings they apply aren’t the ones Intel officially recommends. They’re always more extreme, which is wrong. Think about the average person who doesn’t build their own PC — they just buy it prebuilt and never even enter the BIOS. They just use it. That kind of user ends up frying their Intel CPU with default settings, and that’s not okay. Defaults should match Intel’s factory specs — but again, it’s all about benchmark scores.

Did you update your BIOS, or are you still on the original version? Check your Vcore settings with HWiNFO so you can see how much voltage you’re getting — in idle, productivity, or gaming. Just know that they often push over 1.55V (even 1.50V is already a lot). There’s a good chance the TUF board is the culprit.

Even if people here might hate me for saying it, I’ve always overclocked my Intel CPUs. Yes, it voids the warranty — but overclocking is part of Intel’s ecosystem. They literally created the rules for it, and they let us tweak both CPUs and GPUs. There’s even an entire product line designed specifically for that.

I’ve always done it because of how Intel designs these chips. At first, all the CPUs are basically the same — then, based on performance, they’re binned into i5, i7, or i9. After lots of testing, for example I figured out my i5 was actually a failed i9 — a lucky batch. It had several defective E-cores, so instead of becoming an i7, they disabled extra E-cores and 2 P-cores, and it became an i5.

So I’m telling you: if you’ve never checked your BIOS, it’s possible that excessive voltage has accelerated electromigration and degradation. Unfortunately, these boards — especially ASUS — are notorious for pushing CPUs too hard. They’ve even caused CPUs from other brands to fail, all for the same reason: aggressive default settings to win benchmarks.

So now, to stabilize the CPU, you can try increasing the voltage — but only if it’s not already too high. If it’s already around 1.4–1.5V, don’t do it. Otherwise, you might need to return the CPU. I’ve told you both options, because if you use your PC for work, being without a CPU for a while (even for a warranty replacement) can be a real problem. ( this If you're having issues both in productivity and gaming )

PS:

For example, while checking HWiNFO, look at how much voltage is being sent to the Vcore — check both the Vcore and VR VOUT readings. If you're only having issues during productivity tasks, and games run fine, you might be able to fix it by enabling a negative offset for AVX workloads. In the BIOS, look for something like AVX offset and try setting it to -2. If that’s not stable, go for -3. If this works, great — it means you can stabilize your CPU just by tuning it.

( You’ll know it worked if, after setting the AVX offset, you run Cinebench and no longer get any errors.)

After that, I’d also recommend applying a slight undervolt for gaming, just to be safe and make sure the situation doesn’t get worse. And if it does degrade further, it’ll likely happen after you’ve already replaced the CPU anyway.

[Pro40ne]

Hi @Davu 

Thanks for trying to help.

So this is my sweet spot with 1-3 crashes a day multi core test.
single core test still crashing no matter what i am trying to do sometimes after 1 min sometimes after 10 sec.
I cant even use power plan on high performance since its making it stability issue, so i using balance plan since 1 year ago.

beyond that this cpu already not worth it since it performing worse than 2 generation backwards. i dropped 30-50 fps on my main games.

I will try soon to run hwinfo while playing on mindseye since it heavily works on cpu if i will still crash there with that settings i will start rma with my store first(still have the warranty until 02/26 without the new extension policy)  they also will be needed to upgrade me to 14900ks since there in no any 13900ks in my country anymore.

[Davu]

No worries, really — I hope you manage to fix it. First of all, the fact that it’s still under warranty is great, in case you decide to replace it. But what you told me actually confirms two things:

1. It’s definitely the issue I mentioned about ASUS default settings being way too aggressive.

2. There’s a good chance you can fix it yourself without losing access to your PC — and without voiding the warranty.

I believe that if you switch to Intel’s official default settings, your CPU should go back to normal. Because if it were completely fried, it would crash all the time — not just occasionally. So that’s a good sign.

Now, you’ve got two options: – Either go into the BIOS and manually set everything to Intel defaults – Or create a BIOS update USB stick, flash the BIOS, and enable Intel Default Settings

(Just a heads-up: performance will be slightly lower than what you’ve been getting with ASUS’s aggressive settings — but at least the crashes should stop.)

If you don’t want to update the BIOS, try doing this instead.

ASUS Z790 Motherboards:

1. Save your current settings into a profile so you can return to them later if you want.

2. Reset your BIOS to default settings. Ai Tweaker tab:

3. Disable MultiCore Enhancement.

4. Enable XMP(if your RAM supports it).

5. Set SVID behavior to Typical Scenario.

6. Set short duration turbo power = 253

7. Set long duration turbo power = 253

8. Set max core/cache current = 307Amps

Boot into windows and test. If you are still unstable, go back to BIOS and set SVID behavior to "Trained".

( Even if you lose a bit of performance, it’s better to update the BIOS — especially with a KS chip )

To see the Intel Default Settings option, you need to update the BIOS.

[Pro40ne]

I'm already on that settings my bios on latest for my motherboard Asus tuf z790 plus wifi 1820 version
I'm using this settings maybe for 1 year since the issue was found out way before the bios update to fix that issue. I guess it was too late 1 year cook it having the cpu since jan 23.

Check the HWINFO that i attached last reply

[Davu]

The only thing you can try without voiding the warranty is setting an AVX offset. Try -2, and if it’s still unstable, go to -3. If that doesn’t work either, at least you still have the warranty.

( Besides the AVX offset, you could try increasing the voltage — but that counts as overclocking, so since you're still under warranty, it’s not really worth it. Try the AVX offset first and see if it helps you avoid being without a CPU. That option is safe and was designed for situations like this. )

[Pro40ne]

setting an AVX offset will reduce the clock speeds even more than i have now it's already not worth it
i have 2nd pc i can live for 1 week without my main pc and streaming maybe they even replace it on the spot they have the 14900ks in stock will upgrade my self for the tortured since i still want upgrade my gpu when actually good gpu will come out to make me say 2080ti u had enough.

@Davu Thanks a lot for trying to help me at least we clear that it beyond holding it up because my warranty soon gonna puff better sooner than later.

[Davu]

Yeah, but only during AVX workloads — setting it to -2 drops about 200 MHz, and -3 drops around 300 MHz (for example, in Cinebench). By the way, did you manually lower the clock speeds yourself?

( In games, the only AVX workload you might encounter is shader compilation at the beginning. )

[Pro40ne]

lowered clock manually only when i was installing windows since i got blue screen during installation and went back to default settings after installation of windows. (rma ssd since it health gone to 0 health and wanted to make sure that it  wasn't the issue for crashing - same I rma my ram since it shown error during memtest and when i got my replacement ram i tested it on memtest for 8 hours no error during the night but issue with crashing games, apps, tab, etc was still there with 0xc0000005 read posts that this error indicate also on bad cpu).
your method i used 1 year ago maybe less maybe more cant ping point it without touching clocks speed and such and when the new bios settings came up i updated and default settings again and checked that it actually work as it intended.

[Davu]

Yeah, it’s already been gone for a while… Next time, update the BIOS right away so you can be worry-free!

You just need to replace it. xD

Well hey, at least you’re getting a 14900KS, right? Just make sure to prep a custom loop in the meantime — if they really upgrade you to a 14900KS  XDDD

[Pro40ne]

Yea they have too since there no 13900ks in stocks at all in the shops or warehouses in my country, also you getting refund money since they cant replace it to same item, refund works base on the price of the cpu you choosing as replacement.
same thing was with my ram when I used the warranty on it they tried to scam me like i dont know their policy if they cant replace you with same one you can ask refund for the price of the item you choosing for the same amount money of your purchase so 14900ks cost the same now when i bought my 13900ks so it free upgrade but the pain for 6month i having with the pc will be worth it

[RandyT_Intel]

Hi @Pro40ne,

I will now continue assisting you through email to ensure smooth communication moving forward. A warranty case has been created on your behalf, and I will be providing updates and next steps directly via email.

Additionally, I will be offering a resolution regarding your concern as part of this process. Please keep an eye on your inbox for further instructions and updates.

If you have any questions in the meantime, feel free to reply to this message.

Regards,  

Randy T.  

Intel Customer Support Technician  

[Pro40ne]

Hi @RandyT_Intel 

For now can you put it on hold, since I prefer rma from the pc shop i bought the cpu so I could speed the process and also i could just get refund and upgrade my self on the same time to the 14900ks.
If there will be any issues or I get the replacement(upgrade) I will contact through this post to inform on the status.

[RandyT_Intel]

Hi @Pro40ne,

As requested, I’ll place this case on hold. Since you prefer to proceed with the RMA through the PC shop where you purchased the CPU, I will also go ahead and close this thread and warranty case I created on your behalf. Please note that it will no longer be monitored.

Should you encounter any issues, feel free to reach out or submit submit a new ticket if you need further assistance in the future.

Regards,  

Randy T.  

Intel Customer Support Technician