Did the CD/DVD drive you have installed come with Drivers? If so, then attempt to uninstall the previous drivers by navigating to Device Manager, select DVD/CD-ROM Drives, right click on the drive that is failing and select Properties. From this, navigate to Drivers and uninstall.
If your CD/DVD drive did not come with a driver installation disc, then we can give you a driver for it if you can give us the brand and model of the drive.
Which OS do you currently use? windows 7 can update drivers, so if you have windows 7 uninstall DVD/CD-ROM then update it in device management by internet, If you don't have windows 7, whats model and make ? Could also be that the lens is dirty, try using CD cleaner won't matter that much if it don't read it as long as it spins, best of luck!.