all you have to do is get a new hard drive if that dont work look in playstation.com then go to settings and it will tell you the rest all you need for this is a usb cable or a ps4 hard drive so that is how you fix it but one thing dont belive youtube i tried youtube it messed it up even worst so just take my advise but if those steps dont work that means you need a new ps4 the only reason it came broke is because the compane might of did something rong. so there you go. :)