Hey guys, i was having a lan party for 3 days and i set my macbook to Boot on windows. Recently, i cannot boot back into Mac OS X despite pressing the option button really fast and many times. Whats wrong??? When i press the start button, the chime sounds and it stays at the grey screen about 2 mins, then to a black windows screen with a "NTLDR is missing, press ctrl alt + delete to restart" ***, i seriously hate windows. How can i recover my mac partition? and boot back into it?