I have a G751 Ds71, it has a faulty keyboard so I bought an external one, luckily before fully testing Veracrypt I entered a simple password(and a key that worked on the old integrated keyboard) well to my surprise, the K70 Lux cannot be used to type in a password. I had to disasemble the laptop to connect the integrated keyboard again. I checked my BIOS settings, Secure boot is disabled and Legacy USB is enabled.