I cant boot from USB (Laptop)

[zapajb]

I already disabled secure boot , and even tried switching between different usb drives, tried formatting in FAT

This has just started happening and i need help fast because i leave for a business trip soon !

 

[smarthelp]

Did you try this piece of advice? http://lifehacker.com/5991848/how-to-boot-from-a-cd-or-usb-drive-on-any-pc