help me!!!

[tryy3]

Hi i been playing demo but i dont think it work, i can start the game and all that but when i play it be dark screen i still can go around but i cant see anything and on someplaces when i look i get up a little little square that is light, i tryed to borrow my friends amnesia and install on my comp and take a random custom stories (it is canabalism) but still same and i loook it up on yt (the custom storie) and its ment to spawn in a room but i only get a dark screen and if i look at somepoints i get a square light (probly where the light is) but i cant see if i go into any walls or anything! plz help me!