No, I am telling you to boot from the CD. Go to BIOS, change the order so that it boots from the CD first. If you do not know how to go to BIOS, read the manual that came with your computer. Esc, F2, F10, Del and others are common keys to get into BIOS, press as soon as you have powered on your computer. However, I would suggest to get a help from someone who has no problem following these instructions to prevent complete data loss.