You may want to try "zapping your PRAM" or doing a bios reset in pc speak and the magic key combination is.....drum roll please command,option,p and r simultaneously of course (you may need help from a friend) and wait for four chimes then it is done or you could try command,option, o and f this will take you into the bios basically you get a grey screen and a prompt you can try this set of command to zap everything reset-nvram set-defaults reset-all is this a G3 or a G4 imac btw?
ryno
Paul Clarkeʼs blog - I live in A small town, Kent. Wed to Clare + father to two, I'm a full-stack web developr, + I do js / Node, some ruby, other languages ect ect. I like pubbing, parkrun, eating, home-automation + other diy jiggery-pokery, history, family tree stuff, TV, squirrels, pirates, lego, + TIME TRAVEL.