I have the same problem. My macbook, purchased very recently, towards the end of June 2008…I’m not even sure if its a month old…turns on…loads for a while…and then all of a sudden the folder pops up…but i dont hear the clicking noise…also…wen ii put in the install disc for mac os x leopard…i saw that macintosh hd was in the left pane in disc utility but wen i went to startup disk macintosh hd wasn’t there….so wen i got fed up wit it..i decided to reinstall mac os x…but about 3 minutes into the installation it said that the installation failed…what should i do???