I have a Dell 5200 Inspirion - bought it July 2015 (my third Dell laptop). About four months ago, the plastic mounts in the base (not the display lid) snapped due to pressure from the hinge. Never dropped. Never bumped. A familiar story, it seems.
I really don't have time to mess around and fix this kind of thing - saw various YouTube vids that explain how to do the job - and threw up my hands.
I looked around at other laptops - Toshiba, HP, Lenovo, Acer - they ALL have hinge problems. Apparently, in the rush to make laptops as thin and light as possible, they skimped on the engineering. Looking at the inside of the case, I'm surprised that these machines don't have more problems.
Want a laptop without a hinge problem? Buy a Mac.
Looks like I'm going to have to buckle down and take this box apart. I'm using gorilla glue.