Create a Bootable USB (Windows Vista/7)

Open a command prompt with administrator rights and enter the following sequence of commands:

   diskpart
   list disk
   select disk {number}
   clean
   create partition primary
   select partition 1
   active
   format fs=fat32 quick
   assign
   exit

In the "select disk" command, replace {number} with the drive number of your USB drive as indicated when you ran the "list disk" command. Check and double check you choose the correct number since this procedure erases everything on the drive you select.

Or download UNetbootin