If you have a computer,inset the micro sd into the adapter that was supplied(after you have unmounted it from your settings menu). Insert that into the computer. A window should open up with the contents of your SD card(if not click on start/computer/SD card). Go to start/click on your folder/create new folder and transfer the contents of the SD card into it.Go to start/computer/right click on sd card, select format. Select:restore device defaults, click on start and wait. After it is done transfer everything back over to the SD card Window,click on safely remove hardware icon and remove adapter. Reinsert SD card. It should automatically remount. I hope this will fix your problem.