Windows 11 update with Gigabyte X570 AORUS Ultra motherboard issues

I have been updating some of our test systems to Windows 11 and have had no issues so far. The majority of them have been DELL systems that are less thatn five years old, with a few odd systems thrown in that we use for development and testing.

We have one hand build system with an AMD Ryzen 9 3900X (12 core) on a Gigabyte X570 AORUS Ultra MB. The last update of CMOS put the BIOS at f35, so we are pushing the newest version.

Here is the issue. The old build has Wind10 Ent, UEFI, no-secure boot. I changed the BIOS settings to turn secure boot on and it reboots into the BIOS. I can't get it to do anything else.

Any ideas appreciated.