BSOD question

Hello all. I just got a BSOD and i wanted to know if anyone here could tell me why? It was fairly random, i was watching a youtube video, downloading a game on steam. I started to do a disk cleanup and then it happened.

DMP file: https://www.dropbox.com/s/4hwqf812rgc1bbk/041715-10468-01.dmp?dl=0