Download the Rescue Disk from here: http://content-down.bitdefender.com/rescue_cd File will be downloaded as an ISO image. You can use ImgBurn to burn the image file to CD. Download ImgBurn from here: http://filehippo.com/download_imgburn Use the Download Latest Version link to get the most recent copy of ImgBurn. Once the BitDefender Rescue Disk has been downloaded and burned to CD, boot up the computer to be scanned from the CD. Hit Enter at the first prompt. The Rescue Disk will run update the virus definitions and scan the hard drive automatically.