DVD/CD-RW Drive won't Read Discs

I have a dimension E521 and it will not read any discs placed into the drive. I do not get any error messages, just that there is no disc in the drive. When I ran a custom test of the CDROM/DVD it gets to the read test and regardless of the disc in the system I get this message, "The CD inserted in your CD-ROM drive does not contain any data tracks. You must insert a CD containing data such as a software installation CD if you would like to try again. Would you like to try again?" The CD is a software installation CD and I tried multiple. Any advice??