I don't know what that particular part of the laptop is actually called, it's either the hinge or it's on the right side on the area where you close the laptop it would crack open, this always happens to my laptops. How do i fix it? It's a Lenovo laptop. My laptop costs around $350-$400
Added (1). It cracks open when i fold it open. And it's on the right side, near the hinge…
Added (2). i think it could be a loose nail that came out… But how did that happen? Is there a way to fix myself?