Fix forward slash / interrogation key on Lenovo ThinkPad

Problem: the ?/° key does not work on Lenovo ThinkPad notebooks.

Fix: download and run this registry fix, then reboot the computer.

Registry file contents:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,02,00,00,00,73,00,1d,e0,00,00,00,00

Source