I was having the same problem with the SD card. I am using a Samsung 32GB. I used my PC to format the card, but you cannot remove the SD card until you do the following.
When you right click on the directory, you see the format function. I did a quick format and then I RIGHT CLICKED again and in the menu was a “REMOVE or EJECT” function that you need to click before you remove the SD card.
If this is not done, it may cause a problem with the SD card not working in the camera.
If you removed the SD from the PC without the proper removal procedure, just reinsert the SD card again into the PC, reformat and use the “Remove” function.