I have a Macbook OS X. This just happened when I turn on my Mac it goes to a folder with a flashing question mark. I don't know how to fix this so I just want to restore it. I have my Mac OS X disk in automatically tries to upgrade to v10.5 and when I put it in it asks what language and I click English and then after a minute it says Mac OS X v10.4 or later cannot be found on your computer. So how do I restore it to factory settings?