Hey Pentagon, thanks for the reply. I didn't see your message until today. Hopefully I'll get a chance to try this this weekend.
Crossing my fingers...
"alt + enter" or "F4" are usually the keys that most programs ( usually games ) have assigned to minimize the window or bring it out of full-screen. ...
Catnip. I can control the motor speed no problem, near as I can tell anyway. They look to be turning in the correct direction and the correct speed....
Took a few attempts to find the right device to add and its boot file (\EFI\Boot\bootx64.efi), but got there in the end and booted from the usb NVMe...