Hello, MaxHunter.
May I ask if there is no selection in the PCI Express configuration in the BIOS? Are any of the ASUS Q-LEDs on?
Does the BIOS not recognize PCIe after you update the BIOS? Or does it only happen after you unplug everything?
Could you provide the BIOS version and a screenshot of the unrecognizing issue so we can better understand the problem?
Please refer to the link below and test with minimal components, isolating the possible cause.
https://www.asus.com/support/FAQ/1042632/Thank you.
Due to the ongoing regional holidays, my responses may be slightly delayed.
Thank you in advance for your patience.‌‌‌‌ 🙂