Xperia Xz won't play videos

[rheaxX]

Hello I wonder if you can help!? I bought my Sony Xperia Xz about a week ago and had no problems with any of it, until today. It has stopped playing any videos. I can hear them but can't see them, it's a black screen! Why? How? And can this be solved? Please can anyone help? 

[CameronT]

Hi @rheaxX,

What format are the videos in? Do you experience the same issues with apps like YouTube?