I have an Asus notebook, and I have recently installed Windows 8.1 from 8 because it came up with the srt.trail error. It has done it again recently with the new Windows 8.1 I have installed. There is no longer an option in the trouble shoot menu to boot from USB directly. So I have to use the bios. It won't let me select my USB path when I create a new boot option, it just says "PCI(11|0)\DevicePath(Type 3, SubType 12) HD (Part 1, Sigee46d80f-652e-45da-aa27-163d89abf7d)". Am I doing something wrong in the bios? If I am please tell me!