I'd try another internal or external (connected via USB) DVD-player. Hardware can break down.
I have windows 10 on an older Dell Inspiron desktop. The DVD player worked fine until a few days ago.--and I had windows 10 since it came out, no problem I do like to occasionally "pop in" a DVD to watch a DVD commercially bought (not burned myself) or to use a video series(again, commercially made) that I use for my history classes that I teach. Just recently when I put in a DVD into the Dell tower tray, nothing happens- the computer just sounds "grunts": a little, as if trying to read the disc "mmm, mmm" But here's the curious thing I have some old movies, Hollywood feature films, and even one downloaded "modern" movie, one of the Jurrassic park films, that I downloaded months ago, and they are now in a folder-- they play PERFECTLY... it's only the external "tray" method that is "dead" what is going on here? why are the "internal" films playing well, and the external films introduced by tray don't work at all-- and how can I fix the problem? (I am not "computer oriented" in terms of administrator codes, etc) I'm hoping the solution is easy.. thanks