Okay let me start by saying that i should down my computer one time, and I go to trun it on again I get a flashing folder with the questions mark im sure everyone has had this problem. But my qeustion is I read a thread on here before that helped me with this problem last time it was an easy COMMAND that just booted my computer to the very last time that it was working it stated up fine had the apple logo with the spinning circle and everything was just working fine intell i had to shut it down and move into my dorm room goto trun it on and here we go again could someone tell me that COMMAND or what I should do about this please?