Thanks for the link!
I have fixed my problem.
All I did was follow this advice given by 'Glenn'.
My CD-ROM drive works perfectly and my computer is running better thanks to ccleaner.
"Did you try uninstalling and reinstalling the drives? All you have to do is right-click My Computer, click Properties, click the Hardware Tab, and then click Device Manager. Once you've opened the Device Manager, expand DVD/CD-ROM drives, and uninstal each drive by right-clicking it and selecting Uninstal. After removing both, restart Windows (you could also just choose to scan for harware changes, but restarting is more effective, since it also resets your processes). Windows should automatically reinstall the drives."