The front cover on my Inspiron 6400's screen has begun to part from the back cover, just at the corner where the hinge is. When I open or close the cover it flexes open more or less. Its as if the hinge is frozen and causing the covers to split. I leave it open mostly so as not to aggravate the problem. I have got replacement hinges on E-bay but I am a bit scared of trying to replace the problem one. Indeed I'm not even sure if the hinge is the problem. Should I leave well enough alone or attempt the repair? The Laptop is well out of warranty.