before I turn on my pc id be able to plug in a usb device in any pc I have but on my one I jut got everytime I do this it start up but freezes on the display page if I turn off the pc and let it start up fully all the way past the user login than plug in a usb device it works fine but id like to know why it doesn't work when I plug it in before turning it on fully and how can I fix this?