Hello RicTech,
I understand you are getting the Cyclick Redundancy Check error when you try to access the DVD you burnt as a backup. This is usually due to corrupt data on the disc. I would recommend you review and follow the steps on the wikiHow How to Fix a Cyclic Redundancy Check Error to see if you can safe the data.
I hope I have answered your question to your satisfaction. Thank you for posting this on the HP Forums. Have a great day!