This problem can occur when the keyboard and/or mouse is plugged into a USB 2.0 controller, due to the way BootIt NG takes control and provides only mass storage device support. To solve this issue:
- Move the keyboard and/or mouse to a USB 1.1 controller;
- Use a PS/2 keyboard and/or mouse instead; or
- Disable the USB 2.0 Support option in BootIt NG's Settings.