Create a new reg_binary value in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout called
Scancode Map with values:
00000000 00000000 03000000 000037E0 00000054 00000000
(this kills both prtscrn & alt-prtscrn on US101 keyboards)
Keyboard scan codes:
https://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html
https://www.phord.com/keyblock.html