The following may work for you.
Download and install Recuva - Recuva - Undelete, Unerase, File and Disk Recovery - Free Download
Disconnect USB cable and goto Settings --> More --> USB Utilities
Tap the "Connect Storage to PC" icon
Now connect USB cable and it will enumerate as mass storage.
Use Recuva to recover from your internal device memory ( which is now shown in your My Computer as a removable storage)