I've tried opening settings from control panel and my start button will not open, (i'm aware many people have posted threads about this but none have helped me so far) everything in my taskbar has dissapeared when i restarted from fixing drive errors, and i also can't pin anything to my taskbar. Also if i restart my computer it takes much much longer than usual to start up, and goes through a series of black screens. So i would just like to know how to fix these, or even just fix settings and go back to windows 8.1