Once you have your bootable media created, you may need to access your computer's BIOS settings to set the boot order for bootingCD/DVD/USB's first (before the hard drive). Typically there will be one or two special keys that can be pressed during initial power-up of thecomputer (before an operating system starts booting) that will allow you access to either the BIOS Settings/Startup Menu or a separate Boot Menu. Specifickeys vary from one manufacturer to the next, so refer to your user manual if you are not sure how to access the settings.