I have an old Powerbook which one day when I tried to start it up I pressed down the wrong buttons to start-up without extensions (command+option+shift+delete) Now all my powerbook will do is go ...

err. Not sure where to start. I have been given a powerbook 1400cs/133. I know quite a lot about PCs but next to nothing about Macs. I have run through the guide and played around for a while, but I ...