I don't know what the name of this bug

Dear Mojang Studios

I am from the Windows 10 minecraft player got a bug
I don't know what the name of this bug is, just look at the video I gave via the link

video link: http://www.mediafire.com/file/7wveknpqgk0qpht/file

Initially I wanted to enter the game, but when I entered there was no loading screen and at that moment the screen of my laptop was black in my windows 10 minecraft game and there was no playing menu but only music from minecraft.

please fix the bugs, mojang studios

from (robegtudar)