1. Though CDs as a data storage media are more reliable than floppy disks, they are also prone to errors. Since a blank CD is cheap, it is recommended that you make multiple copies of your important data. It is not possible to read data from a badly damaged CD.Try multiple CD's of different brands to see if the problem persists.

2. Check for viruses, Trojans and Spyware. First check for and remove all spyware, adware and then run a antivirus program . Third party programs running in the background can also cause an error.

3. There may be a problem with the drivers. Go to device manager, uninstall the DVD-RW drive and then install it again. If this does not work, try getting updated drivers from the DVD-RW drive manufacturers website and reinstall them. For older versions of Windows, if the operating system is corrupted, you may get errors.
You should update your firmware with the newest version available.

4. The DVD-RW drive lens may be dusty or dirty. Try to clean them.

5. The data may not be properly written onto the CDs. If the CD is burned at the fastest possible rate, the quality of the CD will be poor and it may not work on all CD drives. The slower the data transfer, the lower the chances of data corruption.

6.Go to Windows Explorer and right-click on the drive. Go to Properties and Recording Tab. Verify if 'Enable CD Recording On This Drive' box is checked.

7. Most DVD-RW drives available today have a one year warranty, so if it is still under warranty, you can get it replaced from the supplier.