Need help with a very strange problem

My mom and I use a HP laptop as TV. Over the years I've built up a playlist of videos for myself. But now there's a big portion of videos that the laptop won't let me watch for some reason. It doesn't bring up "sorry this video is unavailable", it doesn't do that. Where the video is supposed to play is just a black screen and below where other videos are supposed to be suggested is....just a black screen. But the weirdest part is that the video is still there in some capacity, because I can click on it, I can scroll through all the comments, I can see my playlist (that the video is in) off to the side. This is the weirdest and most infuriating problem I've had in a long while. Has anybody encountered this.... whatever this is and so you know how to fix it?

P.S. If you're wondering why I didn't post this in the Tech Support subreddit, well apparently I'm not allowed to post there. I joined them, agreed to the rules, everything and still wasn't allowed to post.