There might be some changes like a minor update on your phone, leading to the audio codec changed or not supported. You can use a media converter to transcode your files to common used audio and video codec like H.264+AAC MP4.
You say you have tried different video files and players, it should not be issues of video itself and video player. Are you sure you're running the latest graphic crad driver? You can try to re-install the driver to see whether it works.
What codec your MP4 video is encoded? There is a possibility that you convert MKV to MP4 in HEVC or VP9 codec. Thus you can play it on PC (Windows 10 I mean), but failed to play on PS3. If that's the case, re-encode your MKV to MP4 in H.264 codec. If not, ignore me pls...
CD/DVD drive missing can be caused by various reasons like Windows 10 update, corrupt driver, out of date firmware, or a factory defect. You say you just upgrade to Windows 10, it might be the culprit. You can try the tips below to see whether it's working: 1. reinstall or update device driver...