Hi Sylvia-
Thanks for helping!
I have tried two different USB thumbdrives, in various USB connections, with both GA0064 and GA0066, with no change. I tried both USB2.0 and USB3.0 thumbdrives and connections.
Whenever I unplug the Bios config jumper and perform the Recovery With USB Device procedure, the system goes through a few events, then reboots and goes through several more events. I can see the LED's changing patterns and the Post Code Display LED's changing value. However, I never see any indication that the monitor is receiving video. For what its worth, I notice that the USB LED on the Diagnostic LEDs never lights up during this procedure.
Once I replace the Bios config jumper and reboot (sometimes it requires several tries) the Bios screens are not visible but the system eventually boots and works normally (all thumbdrives and USB connections check fine).
The Bios obviously was set to allow F7 and USB booting when last configured. Unfortunately, the last Bios boot order setting did not (evidently) allow booting from the cdrom.
I also unplugged the case USB connection cables and used the USB connections directly on the board itself.
Further ideas?
Thanks,
Keith