Welcome to the forums lilly1988
The drive isn't recognizing the disks. Sometimes this can be helped by updating the firmware of the drive.
Matshita drives are not particularly good drives and Matshita/Panasonic don't often provide new firmware for them. You'll need to get the firmware from the maker of your laptop.
Tell us the make and model computer you have and we may be able to locate a new firmware for you.
Another thing to try is to remove the upper and lower filters. Follow this guide for that: http://pcsupport.about.com/od/driverssupport/ht/upperfilters-lowerfilters.htm