Recent content by TServo2049

  1. T

    "Reboot or select a proper boot device" when external USB drive plugged in

    Hello, A few months ago, seemingly without warning, I started experiencing problems where if I rebooted my computer with a specific external backup storage drive plugged in, I would get the "Reboot or select proper boot device" message. My main boot drive is a Samsung 850 Pro 512 GB SSD...