'Kay so, my iBook G4 (Who I refer to as the Macasuarus, becuase it looks so ancient next to my brothers shiny new iBook!) is not responding to anything... -Not the several install discs that it has with it. (Yes it has several, Yes they're all different and No I don't know which one - which OS - is currently installed on it!) -It makes a grinding sound every-once-and-a-while. -The HDD sometimes works... For instance... I would press down the button with the apple on it for a real long time and it would boot up properly, but only sometimes. Or once Option-Apple-P-R worked and even pressing C worked... I really need a computer that is mobile at the moment, so could someone please, please help. And my other laptop just broke today too, coincidently with a dead HDD but it's a Compaq so meh. Please put these (Your help) in terms any 17 year old girl can figure out. I'm really not techy. Thanx!