Just the past hour i noticed this, when i open it, pic related happens! I think it's the back of the laptop that's coming off or the top of the split you see here. I have inserted a link, yeah it's a bit dusty with the phone light on. Is this a big job to fix? i know as a fact that if i continue to use this laptop, it's only all down hill from here.
I hope it's only a matter of opening it up and tightening a screw but i'd doubt it with my luck.https://i.imgur.com/50sQvQG.jpg
Model: Acer Predator Helios 300 g3-571
There's a bit of dust that i've ignored over the years, it probably has its own eco-system at this point.