Apple iBook G3 Mac Notebook "symbol wont work" Questions

...symbol. Click it, and make sure that its on. If it is off, you will have an option to "turn airport on". Turn it on. If it is on, make sure you are connected to the correct network. If you try to ...

...wont work. blinking Folder with "?" I start the comp, the apple appears and it dings and then all of the sudden it blinks a folder with a "?" on it and it has a buster symbol around it. how dod I fix ...