Sd card wont work

[AC Question]

Just upgraded from a galaxy s5 to a galaxy s7 took my sd card that worked fine in my s5 and put it in s7 tryed to play videos, music and pictures and none of it would open but i could see the files, tryed puting my sd card back in s5 sd card didnt show up, put back in s7 couldnt access sd card says unsupported, tryed formatting sd card gets stuck at 20% and says error , tryed using card reader on pc didnt work, s7 says unsupported format or somthing for sd card but cant reformat it gets stuck at 20% every time and says an error