My mom's been using an old laptop whose keyboard appears to have broken. The problem manifests itself such that some keys group themselves into groups of three such that when she presses any one key in the group it presses the other two as well. The on-screen keyboard functions normally, indicating that it's the hardware that's the problem. Could cleaning the keyboard possibly fix the problem, or should I just write off the laptop?
EDIT: It's a Compaq Presario R4000
I haven't tried cleaning it yet. I can, but I guess I was doubtful that it could be fixed from that since it appears to be a problem more with the circuitry than the mechanics. For example, pressing either 'a', 's', or 'return' causes all three keys to be pressed, which couldn't possibly be a mechanical problem. But computers work in mysterious ways so I suppose it can't hurt to try.