I need a repair manual to replace the hinges. Somehow the screws under the rubber feet on the left no longer hold, plastic particles have broken out. Tighten the screw, now it is no longer pure and there are plastic parts eroded. When I open the laptop, the case gapes, what can I do? Do I have to swap the hinge or possibly parts of the housing? Which parts do I have to disassemble to get to the hinge? Please post the instructions for removing the necessary parts.