Dell Dimension Desktop cannot read blank Black Memorex CD-Rs

My Dell Dimension 4600 Desktop CD drive cannot read blank Memorex Black CD-Rs. I insert the black memorex CD-R disk and the drive doesnt even recognize that there is a disk there.

it isn’t your “Dell Dimension 4600” that refuses to read those “Memorex Black CD-Rs”,
but rather your optical drive.

did it recognize those discs before?
or is this your first experience with them?
do you know the make, model number and specific firmware revision of your optical drive?

Does the drive read commercially made cds, or other types of burned cds?