Easiest way for me to burn ISO: Download imgburn: http://www.imgburn.com/index.php?act=download Install by following onscreen instructions Download Ultimate Boot CD .ISO file: http://www.ultimatebootcd.com/download.html Open imgburn and click on the first icon that says "Write image file to disc", Top left corner says "Source" "Please select a file" with a folder and a magnifying glass - click that folder Search to where you downloaded the .ISO file for UBCD and choose it Bottom left corner is a button that looks like a piece of paper with a CD on it and an arrow pointing to a CD - click it
Wait for it to get done and boot off of it.
Making sure your Optical/DVD drive is the first boot device: Power on the PC and hit "F2" or "ESC" or whatever gets you into BIOS. It should prompt onscreen what to hit. Depending on what BIOS you're using, there will be a section that says "Boot device order" or "Boot priority", make sure "Optical Drive" is at the top of that list and doesn't have an "!" by it which signifies it's being skipped. Try to boot off of the UBCD.