Asus ROG CROSSHAIR X670E HERO - UEFI 3402

[nih]

I've recently got stuck in a boot loop on my rig. Things were working fine until the 15th of january this year.

The board has always had issues since I got it in 2023, with the thunderbolt issues at the start. Otherwise, the system has been working good enough, not enough to justify the price, but still.

So far I've tried the following:

Memtest - no issues

Switched DIMM slots and one stick of RAM at a time

Switched PSU

Switched GPU (from 3090 to 5080)

Removed all peripherals, including internal usb ones, other than the cooler

Removed all M2 drives and tried to install Windows on an SSD

Removed all SSDs and tried to reinstall on one M2

Sent the motherboard to the seller, they got it working somehow and were able to boot in to windows.

Got the motherboard back, formatted two of my M2s and tried to reinstall windows. Windows seems to only be able to boot when i put the M2 in M.2_1, the others result in no boot at all.

However, after a short while, Windows just crashes when I use the M.2_1 slot.

I'm at a bit of a loss here, are there any UEFI-settings that I should tinker around with to maybe get things running smoother?

PSU: 
Phanteks Revolt 1200W platinum 
Partnr: PH-P1200PR_WT01C
MB: 
ASUS ROG Crosshair X670E Hero
Partnr: 90MB1BC0-M0EAY0
CPU:
AMD Ryzen 7 7800X3D CPU
Partnr: 100-100000910WOF
Cooler:
Asus ROG Ryujin III 360 ARGB CPU
Partnr: 90RC00L1-M0UAY0
RAM:  
Kingston FURY Beast RGB DDR5 6000MHz 64GB
Partnr: KF560C36BBEAK2-64
Storage: 
Sandisk WD Black SN850X NVMe SSD 2TB x2
Partnr: WDS200T2X0E
WD Black SN850 1TB M.2 SSDx1
Partnr: WDS100T1X0E-00AFY0
Samsung 860 EVO 2TB SSD
Partnr:MZ-76E2T0B/EU
GPU:
ROG-ASTRAL-RTX5080-O16G-GAMING
Partnr:90YV0LV0-M0NA00

[nih]

So far I've gotten some stability out of the system by unplugging the wifi antenna and using cable. 

However, installing armoury fails (more than usual), Intel® Driver & Support Assistant (Intel® DSA) also fails while installing and the system sometimes crashes with "Your device ran in to a problem and needs to restart"

[nih]

I've got the system back up and running now.

The issue seems to virtualization. I ran Windows Pro, which is heavy on virtualization, which lead to constant crashes before entering Windows.

Formatting to windows home allowed me to get in to Windows and finally see some error messages. Hypervisor.

Turning off SVM and the internal GPU in the BIOS has made the system stable for at least a few hours.

Gaming runs fine, passmark gives a half decent score. But I haven't dared turn on XMP yet,

[nih · Accepted solution]

Problem solved. The issue was with the CPU. Changing CPU solved every issue.