No external keyboards work at Boot Guard.
No errors displayed.
Quick/Fast boot will bypass the initialization of the USB ports and can keep the logic from loading during post.
Some newer machines may need to XHCI mode enabled in the BIOS for USB ports.
Disable Quick/Fast boot in the BIOS.
Toggle XHCI USB (USB 3.0) setting
Note: For more information regarding compatibility with Symantec Encryption Desktop 10.3.2 please see the article below in the related articles section.
Laptop/Desktop with external keyboard plugged in via USB.