I have a Packard Bell Easynote LJ61 laptop that I inherited from my son. Over the past three months or so some of the keys either don't work at all without repeated pressing, or I get half a dozen all at once. Nothing has been spilled on the keyboard and it doesn't affect all the keys, but it's usually the same ones affected. I've tried prising them off and cleaning underneath, but that hasn't cured the problem. Very annoying, as being a touch typist I don't always follow the screen and end up with a whole load of text either missing certain letters or with half a dozen instead of one! Any suggestions appreciated. Thanks.