PC stops displaying without any error

Since the previous month, my PC suddenly stops displaying, and turns off both of my monitors, but the PC doesn't shutdown, nothing works and I need to restart (sometimes two or three times) to get displays again. It mostly happens in middle of BF6 and I can hear a dialog popup and the game sound that freezes, but it also happens during simple apps

Everything is up to date, including GPU driver, chipset, BIOS etc. I thought it might be because of VMX so I turned it off from windows and BIOS, but it didn't help. It also happens when I undervolt GPU, or when I'm not.

There is no obvious clue in event viewer except a few things, which I'm not sure is related or not, but every time the PC stops displaying these logs were before the system reboot logs

* Error: Secure Boot CA/keys need to be updated
* The virtualization-based security enablement policy check at phase 0 failed with status: Virtual Secure Mode (VSM) is not initialized. The hypervisor or VSM may not be present or enabled.
* Hypervisor launch failed; Either VMX not present or not enabled in BIOS.

13600KF, 3080Ti, 32GB, Asus TUF Z690, Power 850W