Thanks.Couldnt find one of those on mine.I did try pushing down on the corners though and nothing.I have to go out for awhile so I cant mess with anymore for now,Thanks for all the help though.I had the same problem. On the lid there is a little piece of plastic that trips a switch when the lid is closed.
For whatever reason it stopped tripping the switch when the lid was closed so now I have to push the lid down in one corner till I hear a click and then it works fine.