Random BSODs (unmountable boot device)

[MelonCat3000]

Hey everyone, early this year I built my new machine (i9-13900k, asus maximus z690 hero, asus rtx 2080, 2x16gb gskill tridentz ddr5-6400, corsair rm750x, samsung evo 980 pro 1tb pcie 4.0, samsung evo 970 evo plus 1tb pcie 3.0, some Lian Li AIO). Then I started getting seemingly random BSODs, at first with bsod loops and later it just went into the bios and my boot drive didn't show up. Upon taking out the ram and putting it back in it just boots into windows as if nothing ever happened.

Details: 

• No XMP enabled currently. (ram frequency is 4000MHz)
• latest BIOS, Intel ME, drivers.
• Custom cables I made myself for 24pin and 2x8pin cpu, will be trying if that's the issue next
• a 3tb hdd
• windows 11 64bit

Observations: 

• The timing of the BSODs seems completely random, sometimes on the sign in screen, once when a friend joined a discord channel, sometimes on reboot
• Uptime between BSODs also seemingly random, had everything from 18h to 3 weeks

Troubleshooting steps I did already:

• Swapped the boot drive for another and installed fresh windows, didn't help.
• Asus support just wants pictures of my ram (they are from the official compat list on the MBs website)

I am running out of ideas what this could be. Can badly plugged data cables cause this? Is my CPU power cable bad? Or is it the MB or CPU? (hope not. I really don't want to send them in lol)
Thank you to whoever reads this.

[emosun]

20 minutes ago, MelonCat3000 said:

The timing of the BSODs seems completely random

then it'll be a ram issue , run the machine with a single stick of ram to see if its stable in that configuration

[MelonCat3000]

2 minutes ago, emosun said:

then it'll be a ram issue , run the machine with a single stick of ram to see if its stable in that configuration

Thanks for answering, will try. However I am unsure about this being a great solution - if that is stable, is it a mainboard issue? I don't want to live with just one memory stick for the rest of this computer's lifetime haha

Forgot to mention that this is the third ram kit I tried, I originally had two 2x16gb kits from corsair that weren't listed on the compat list (my bad for not paying attention, but the problem stayed the same), so I doubt that the ram itself is the problem..

[emosun]

Just now, MelonCat3000 said:

However I am unsure about this being a great solution

which is why I didn't type this as a solution. this is a diagnostic step to determine the issue

you're going to want to determine what the issue is prior to coming up with a solution.

[MelonCat3000]

17 minutes ago, emosun said:

which is why I didn't type this as a solution. this is a diagnostic step to determine the issue

you're going to want to determine what the issue is prior to coming up with a solution.

I am unfamiliar with the ways of the forum  Thank you! I'll write here if I have updates.