I have had this problem for a couple of days now and i can't seem to figure out what is wrong. Windows 8.1 will boot up and it will show my computer manufacturers logo and go to a black screen. Sometimes is will load up some sort of repair thing where it gives me a list of things i could do to repair my laptop. I've tried most of them with little success. I tried using Command prompt but it says that it found all of the corrupt files and fixed them but, it still does the same thing. It will sometimes boot up and stay at my manufactures logo and it will give me a blue screen saying " Your PC ran into a problem and needs to restart" Booting into safe mode doesn't work. Does anybody have a clue to why my computer is doing this? It was working fine the day before this was happening.