OK so same issue and it used to fix itself if I powered of the ps4 and unplugged it for a few min. Well that stopped working and every time I powered on the ps4 you can hear the gears trying eject a disc that wasn't there. After reading this post nothing worked but finally I got it to work by getting a blank CDR so I didn't scratch my brand new bf1 anyway I waited till the motor stopped then grabbed the CDR and forced it in to the CD tray then pressed eject at which point the CDR ejected normally and after that it accepts games again thank jah