If I remove npci=0x2000, the bootloader hangs at “PCI configuration begin”. If I add npci=0x2000, it hangs at “Previous shutdown cause: 5”. What can I do?

[heiza]

 

Ryzen 7 2700X

ASUS Prime X470 Pro

32GB G.Skill Ripjaws V DDR4-3200

ASRock Phantom Gaming Vega 56

 

My motherboard doesn’t have an option for 4G encoding. And boot modes are listed as ”Windows UEFI Mode” and “Other OS”.