download correct bluetooth device driver from asus support site and then go to device manager , uninstall bluetooth driver then restart windows.
afterwards login windows, install downloaded driver and then adjsut bluetooth settings to allow device pair.
I am greatly appreciative you took the time to answer. I had already tried to do that, but Bluetooth was completely missing from Device Manager.
HOWEVER, this morning when I opened my laptop, Bluetooth has magically reappeared...a week later.
Good. Bluetooth device reappeared again.