I have a nexus 7 32 GB tablet. I have a windows 7 computer. I can see the tablet in the device manager as a nexus 7. it shows up as nexus 7 when i view it on my pc as a drive. When I drag a photo to the tablet from the pc, to the photo file on the nexus 7 it shows up there. I cannot view the photo no matter what I do on the tablet. it says 0 photos. I also cannot get any video file to play on the tablet after I drag and drop it. No sign of it on the tablet, but I can see it in the folder on my pc. I am using usb. This is so frustrating. It claims drag and drop is easy. But what is the use if you cannot view or play a file? Help