i tried on sunday to get this working. no success still. i did notice on the screen before the error message that the install only boots from hard drive and dvd. so there was no way it was going to boot from the usb no matter what the bios said.
it seemed to me that we were finally beating a dead horse. the pc is now at the recycler. it was a nice service!
thanks again all for your time and effort.
AMD Ryzen 5 5600X CPU. 16GB DDR4-3200MHz RGB RAM. 1TB M.2 NVMe SSD. GeForce RTX 3060 Ti 8GB GPU. Windows 10. ViewSonic & Samsung monitors.