Hi all, I'm at a loss here and can't seem to find anything else like this out there. So, my macbook pro doesn't recognize my internal harddrive. Out of nowhere one day it decided it didn't want to work. I went through all the usual steps, backup cd, safe mode etc... but I get shown the little icon of the file with a question mark in it. My next step was the remove the hard drive, put it in an external casing and connect via USB. My Macbook now DOES recognize the hard drive and boot up, but obviously I can't work with my hard drive off a USB because it's not fast enough and it's awkward. Does anyone know what might be the problem here and how I might fix it.