Cavs DVD-202g Karaokee Player displays "No Disk"

Ok this is a little bit harder then the last trouble, I would just for grins check the laser power just in case that is the problem , but the same applies. DVD players have hardcoded software that allows it to play various DVD formats. Sometimes this software becomes corrupted and must be reloaded (flashed). The manufacture should have the flashable software for download since most of the time this solves this type of problem. Also check the laser alignment.