I recently had to factory restore my M8 due to it constantly rebooting. After my factory restore, I can no longer move files (pictures and videos) to the external SD card. I had the ability to do that prior. I also lost the ability to transfer files from my internal SD to my computer. Can anyone help? . The transfers just hang and then fail. I am stock. No root. I should also note that I tried reformatting the SD card. I moved all the pictures and videos to the internal storage so I wouldn't lose them and could not move them back after reformatting.