How to Delete Rhapsody Registry Keys

Hi, I have a HP laptop and when i put a cd in and go to my computer and double click on the CD/DVD drive it says drive not accessible. So i took it to the place i bought it and they figured out that its Rhapsody that was pre-installed on the notebook and said that sence i deleted it it wont let me browse the audio cd, and said its probably the reg key. They also said it would take them a couple of days to figure it out, and im in need of this for school so i figured i would do it myself knowing some knowledge about computers. But my question is i deleted the Rhapsody reg keys that i searched for but i know there has to be more, and i do a search and doesnt come up with any but still gives the error message. If anyone knows could you please help me. thank you very much.