Mouse or hardrive; file, program or software; hardware or chips, I continually find that the problems are in that the “Program it self has not been REFRESHED ever and of course now you have to get a new Moose, its program and all kinds of work and stuff of hauling it down to the store to get it put together so it works. Try instead to have it reread afresh from the original diskettes, not reinstalled – the Reread command in DOS. That has resolved most all the problems that I’ve been consulted on.