If the drive is reading CDs but not DVDs, it's possible your DVD laser has failed. Please test the drive using a data DVD. To test your CD/DVD drive from the utility partition:
1. Reboot your system. When you see the Dell logo, hit F12 to enter the boot menu.
2. Select Boot to utility partition.
3. Select Test System.
4. Select Custom Test.
5. Use the arrow keys or mouse to select your CD/DVD drive.
6. Insert a CD or DVD.
7. Click Run Tests.
8. Write down any error messages.
Thanks Osprey4 but it still won't play CD/DVDs are burn
Error code 0F00:133C
MSQ. Disk No suitable disk media is present
No disk or cannot read from disk inserted in your drive
Did you have a DVD in the drive when you ran the test?
Remember, the diagnostics test the drive. They are not meant to fix anything, just see if it's working.