Seems there are different kinds of card slots, European, American and Japanese, Installing for example an Eurean version into an American version wil result in a not working touchscreen , i think it`s a software issue as the cardslot had same parts, if anyone finds a workaround please let us know

This sounds wierd but in allot cases the PS4 Slim or Pro will read the disk when you put the PS4 on its side or upside down. good luck