Cannot boot (Question Mark folder)
One would say it is your Disk, it got damaged. 

Surprisingly the Verbose does not work at all? 


  the "s" key for single-user mode. (Command-S) the "v" key for verbose
  mode. (Command-V)


If you try the Single user, it should open the terminal.

Alternatively you can use the Internet Recovery mode that already shows as option. Read this from Apple about Internet Recovery mode 

https://support.apple.com/en-us/HT201314

If you have a bootable OS X - USB you could use it to try to fix problems as well.