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My asus laptop hinges sudden just broke, they are covered by these plastic pieces, but those broke off because the metal is stuck in one position and now my computer screen is only attached to my keyboard by the wires and cant stand on it’s own.
This happened to a laptop of mine several years ago, without warning the hinges seized and the metal part of the frame that was attached to the hinge snapped and cracked the front and back plastic, and it was left in the same condition as yours. HP pavilion, never again. You should check your warranty status before paying to have it repaired or attempting to repair yourself. Here is a video of a screen disassembly the hinges look relatively simple to replace, however if the back plastic plate is damaged you’ll need to replace that too. Let me know if this helps.