i have hp laptop i had installed windows 8 which i upgraded to 8.1 i wanted to dual boot ubuntu 14.04 with windows 8.1 i diasbled secure boot and fast startup then used a liveusb to boot then an error msg pops up saying "the selected bootable device failed" my system boot order is : os boot manager usb hdd internal hdd so my question is that y this msg(selected boot device failed) is popping up and should i try to keep usb hdd on the top of my sysytem boot order in order to get it working??? pls reply soon