Few days ago my computer crashed. When I tried to to turn it on it worked fine untill it started to turn on windows. Then I was getting messege : The folowing file is corrupt: ....../Sytem. To fix it I reinstalled windows (I did it for the first time in my life). No everything is working again, but when I turn on my computer I get to choose which windows to turn on. New or crashed. Is there any way to safely fix that.