Laptop not detecting bootable USB stick

[Nick T.]

I am trying to install ubuntu server 14.04.1 on my laptop... I 
downloaded the 64bit version off ubuntu.com, checked the checksums(all 
matched) and used disk-destroyer to copy it on a usb stick (dd 
if=/dev/drive of=/path/to/iso). However when I tried to boot from my 
laptop it just failed saying that no bootable devices have been found. I 
tried rewriting it using disk-destroyer but same result. Got any ideas 
what is happening?