Help me, fediverse!
Earlier today some keys on my HP Envy laptop, Windows 10, pretty much quit working. The F12, 9, O, L and . keys (so a stripe down the kbd). They aren't totally dead, maybe one in 20 key presses register. Although shifted, they don't work at all.
BUT ... they all work just fine in the BIOS, and pass the diagnostic test with flying colors.
I've reinstalled the keyboard driver, and done a system restore.
I am baffled.