"First of all, i want to say my english is not perfect so i will try to explain the problem the best way i can."
I was playing minecraft, a survival world, suddenly a creeper explode and all the world turn black, i could only see lava and water pools, black shadows and some mobs.
What I expected to happen was that minecraft world keep without that black things.
What actually happened was that i put a texture pack because i think it was problem of the textures, it didnt work. Then i reset MC and my PC, when i launched MC the problem had disappeared buth a few secodns later it turn black again. I tried again creating a new world but it had the same "bug". Then i delete .minecraft folder and install it again but the "bug" didn´t disappear.

I look forward to hearing from you.
Thanks.

Regards, Wito91.