a little more precision would be more helpful in helping us to help you solve your problem.
the ominous "it" could be your computer bios, so that's where you'd have to tell it to boot from usb.
or it could be the bootloader on the usb. what program did you use to create the usb? (mind, i don't use windows at all.)
did you follow vastone's guide in post #1 exactly?
the exact console output would surely help.
Thank you so much for this. This helped me with my problem on Windows 8.
If anyone ever has any issues with not being able to boot into your USB on Windows 8 it's because of UEFI. What worked for me was going into Bios and first disabling Secure Boot, disabling Fast Boot, then switched from UEFI to Legacy. After that I was able to boot into any thumb drive without any problems. Just be sure to re-enable everything to get back into Windows once you're done with the flash drive (Enable UEFI, Fast boot, Save and Exit > Restart then go back into BIOS (Because Secure Boot isn't a selectable option for me in Legacy until I switch to UEFI, and Save & Exit) > Enable Secure Boot > Restart back into Windows perfectly fine.
I'm sure there's an easier way to do this but this has worked for me! Thanks again guys!