The main thing that probably happened with this is if u are one of those people that put your ps4 in rest mode or leave it on long enough for it to turn off its self. If u are one of these people u occasionally when you turn on ur ps4 it says u didn’t turn it off properly. A lot of those messages often can be warning u that the ps4 may crash. This leads to the ps4 not lighting up and may not even beep when any buttons are pressed. I had this problem and all u have to do is unplug the power source from the outlet that it was plugged into and after u plug it back in, you simply hold the home button. DO NOT unplug the hdmi cord from the TV.