Thank you muchly for taking the time to reply to my dilemna.
Fortunately (for me and my computer) the only fiddling I do is change the batteries in my mouse BOAC, and removing some fluff (from my mouse wheel thingey).
Silly me ZH875, I had put a floppy disc in this morning, and then forgot all about it.
Problem fixed.
Thank you again, both of you.
