Kali Linux 2.0 not loading from USB

[Lock21]

Hi,
I am attempting to load Kali from a USB. I'm using a dual boot lenovo T410 laptop running Win 7 / Linux Mint. When I go to select boot options on computer start up, I select sandisk drive Kali is installed on but am given the string 'cannot boot from any device' ? Does anyone know what could be causing this or am I not doing it correctly?
- I transferred the kali-linux 2 iso to USB (downloaded from kali last month) using dd command in the mint terminal
- both version and system are 64bit
Thanks,

[Gh0sT.sh]

some times the boot records will be not so perfectly written through linux
use the Windows instead and write the Kali into usb using Win32DiskImager
and then boot menu then boot form USB

[Lock21]

Thanks Gh0sT.sh - I'll give that a shot now.

[duxim]

and did you check sha1sum of downloaded iso is it ok?