Currently I have a bootable usb with kali linux installed, which works perfectly fine on my HP ENVY 15-j151sa. However, when attempting to use on another PC, Fujitsu Esprimo D556/2, the operating system doesn't load and instead displays the image "An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system." before booting straight into the (HDD installed) Windows 7. I believe both run on a 64 bit architecture and the BIOS is set up to boot from the usb first, can anyone see an issue with my setup here?