It is an Inspiron 3521. There is not yellow "warning" by the DVD in the Device Manager. If selected it noted that it is working properly. It definitely appears to be a conflict problem. I tried to install updated drivers but it said that it was up to date although the date of the driver for...
I upgraded from Windows 8.1 to 10. Now my DVD Player no longer works -- "Unknown Drive", DVD keeps on ejecting. I tried many suggestions from people on many forums but nothing works.