My Windows 10 laptop all of a sudden won't boot.  (It's an SSD.)  The message is that "No Boot Device Found".  If I go into the UEFI settings, under Boot sequence, it is blank.  There's no Windows Boot Manager.  All UEFI setting are correct...UEFI is enabled, Secure boot is enabled, etc.

I made a Rufus Windows 10 USB boot stick, and it does show the SSD with all partitions, the way I used to see it.  I don't know why UEFI doesn't see it, but the Rufus stick does.

The Rufus Windows stick does let me boot, and would let me reinstall Windows, but at this time, I don't want to do a clean reinstall.

I can also get to Support Assist, but none of the options there help.

Any ideas?

TIA