Similar issue for me with lsi 9205-8i
If I disable "fast boot" it will boot fine from the USB drive but the HBA card won't be detected.
My next steps to try are:
- Install discrete GPU to get CSM enabled source: https://www.asus.com/us/support/FAQ/1045467
- Enable Interrupt 19 Capture in BIOS. Source: https://hardforum.com/threads/hba-cards-for-modern-motherboards-and-os.2030137/
for now, if I go into Bios and manually pick the USB drive it will boot with Fast Boot enable which also strangely enough picks up my HBA card.