I've had a similar thing happen before, and in my case it was the fact that the USB wasn't made to be a proper bootable USB. I've used about 4 different programs (unetbootin, powerISO, ultraISO and some other) to create a bootable USB, but only one actually successfully made a USB that the computer recognized as bootable. It was either ultra- or powerISO. In all the other cases (including unetbootin) the computer simply did not recognize the drive as bootable and went straight into windows.


