PS4 "no source" on screen

Hi,

I turned my PS4 on, it was working. I wanted to play a game and it asked me to erase the game from the hard drive or the internal storage.

I chose internal storage, it was loading and then my screen showed "no source" and it doesn't work anymore.

I don't know if it's a coincidence or because I didn't start it for a few months ?

Any idea if there is something to do ?