Connecting nexus to computer, computer sees nexus, but it cant see any data inside the nexus

[Android Central Question]

I have a Nexus 7, and I,d like to add some music to the Nexus. When I connect the nexus to my PC, the PC sees the Nexus, but nothing inside. Like the Nexus is empty. So I have no place to put the music.

Any help is appreciated.

 

[Rukbat]

Pull down the notifications and see if there's anything that says that the phone is connected. (It may say "Charging Only".) Make sure it's set to MTP.