There are a lot of instances when we find ourselves looking for a driver or software installation cd that is needed to restore some function you have accidentally removed or uninstalled. Sometimes, they just seem to be hidden so good they defy all searching efforts but sometimes they are right in front of you but with tons of scratches due to your daughter playing with it as you accidentally left in on the computer table. These colorful disks are quite attractive to kids and will be dealt with when seen. Unfortunately, scratches that are deep enough to bend the laser can render a disk useless but shallow ones can be polished off. A warning though, this should only be tried as a last resort for this may also crack the disk or ruin it further.