Tried the System Backup/Restore procedure. Successfully created System Image on specially purchased micro-usb thumbdrive. On attempting as far as initiating the 'Special Bootup' proc. this point the restore procedure REQUIRES user input while at the same time refusing to recognize input from BT keyboard or touchscreen. Catch 22...can't get there from here situation. Had to use hard reset to escape.

Is this a universal problem for Windows tablets? If so, its a downvote for Win10 as a 'ready for prime time' tablet OS.

Workaround - would be for me to acquire a usb hub and microusb adapter cable so I can attach kbd/mouse/storage simultaneously. Then we'll get far enough into the procedure to determine if it will allow me to point it at the correct restore file location.