The last time I used this SD card I was shooting a video when all of a sudden the camera refuses to save the recording and displayed something along the line of "...card corrupted....cannot read...". After that point my computer too refuses to read the card (although the windows sound do play when I insert it into the built in reader). It doesn't even get displayed in My Computer. It was working perfectly before with both my camera and pc. Now whenever I insert it into my camera, my camera won't go beyond the loading screen and a yellow light that's supposed to only flash for a sec after you've put in the card stays lit forever.
SD card is a SanDisk Extreme 16GB
camera is a Nikon D3100 (in case that's relevant)
It was only after this happened that I found out you shouldn't fill your sd card up to the point where it's full. This is very likely the problem since I had less than half of the memory left when I was shooting the video. How do I fix this?
I don't mind a solution that will delete all the photos and recordings (although if I can retrieve them, it'd be super!)