It is possible the DVd laser has failed and the CD laser is still
functioning. Check the drive ..........
Run the Dell Diagnostics on the drive if it is on your hard drive.
Press F12 at startup while the blue Dell shows on the screen. This
will enter the boot menu. Choose Utility Partition or Diagnostics.
Run the Custom Test on the drive and have a data DVD (not movie DVD)
ready for the test.