Asus Rog Maximus Z790 Apex / i9-14900k Stability Issues

[Crankin95]

Hello all,

I am having some stability issues with my Motherboard and CPU combination. I originally had a i9-13900KS which died. I then upgraded to a i9-14900K and the PC was having issues booting and would constantly blue screen on startup. I was told to sync all cores at 56 to stop the board from overvolting on startup while attempting to hit boost clocks. The all core limit of 56 did indeed solve my issue it just seems bizarre to me that the CPU would need to be locked out of the box to obtain stability on startup. I'm not familiar with any of the other settings within  the bios related to under-volting, but it would be nice to actually achieve stability and be able to hit the boost clock values from a 600$ CPU.

If there is anyone here that knows how i can make this happen any help would be appreciated. 

[Jiaszzz_ROG]

Hello, @Crankin95 

Thank you for providing detailed context and explanation.
Could you please provide information on how long you have been using this PC build and have you tried cross-testing with other LGA1700 CPUs?
We recommended that you try disabling MCE and setting SVID behavior to Intel Fail Safe in BIOS to see if the issue is resolved.

Additionally, we noticed the below threads that may have a similar scenario to yours, and their solution may include sending the CPU for repair. 
Mainboard Z690 Maximus Extreme (Mar-2022) with BSOD - exception violation // memory errors // etc
Could it be the motherboard?
Please take a look for references if needed.

Thank you.

[Crankin95]

Hey @Jiaszzz_ROG, 

They build is probably only about a year and a half old, When i had the I9-13900KS in it i did have similar issues they just weren't as serious as not being able to boot into windows at all. It was mainly just issues with random crashes that eventually just got worse over time until the CPU was completely cooked. When i get home i will test the settings you mentioned above and see if the issue is resolved. Is there anything else that you think could be causing the issue other than a bad CPU? i have heard that the ASUS motherboards are known for giving too much power to the CPU and causing crashes... just want to make sure that the first thing i jump to isn't the CPU, if i do end up having to go that route i'm going to get a 14900KS and see if that issue persists with this specific motherboard. Since i'm not entirely convinced that the CPU is the problem both times but it very well could be.

Thanks for your reply and i will keep you updated on what happens with stability when i turn those settings on tonight.

[Crankin95]

@Jiaszzz_ROG 

I have tried these settings to no avail. The exact same issues happened and i crashed on startup while trying to boot into windows and had to revert back to Syncing all cores at 56 to get it to boot. 

[Jiaszzz_ROG]

Hello, @Crankin95 

Due to the ongoing local holidays in our area, my response time may experience delays.
I apologize for any inconvenience the delayed replies may have caused.

Could you confirm your current BIOS version?
If you haven't updated to the latest version 2102 released on March 19, 2024, please consider updating and clearing CMOS.
Furthermore, we kindly request that you attempt further BIOS settings adjustments under the default BIOS configuration:
1. Set "SVID Behavior" in BIOS to "Intel's Fail Safe."
2. Disable MCE in the BIOS
3. Decrease CPU Ratio
And also kindly consult the troubleshooting steps outlined in the "[Motherboard] Solution to Blue Screen Of Death" guideline for potential problems.
If necessary, please consider cross-testing the system disk or restoring the system.

Thank you.