How do you turn off F12 key?

To disable the F12 key, you can use the Windows Registry Editor. Open the Registry Editor by typing "regedit" in the Run dialog (Windows + R). Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout, and create a new binary value named "Scancode Map" with the appropriate data to disable F12. Alternatively, you can use third-party software like AutoHotkey to remap or disable the key. Always back up your registry before making changes.