Hi there. My name is*****'m sorry that you're having this problem. It would be my pleasure to assist you.
I'm sorry to say,since neither the camera nor the computer can properly read the card, the file system on the sd card is likely damaged. You may be able to salvage the card by reformatting it in the camera, however, if the card has some age on it as the camera does, I recommend replacing it, so you won't have to worry about it failing again. If you have photos on the card that you need to try to retrieve, I can recommend several recovery utilities that MAY be helpful. Please let me know.
I'm so sorry to hear that. There are several utilities that may help you to recover the photos. One of the best, ***** ***** opinion is Recuva. It's definitely the best one to begin with. You can download it free of charge and test to see if it can recover your files before you pay for the full version. Please download and install Recuva from this link http://download.piriform.com/rcsetup153.exe and then follow these steps to see if it will be useful:
Insert the SD card into your computer. If prompted to format the SD card, check the box next to “Quick Format” and then click “Start”. This will erase the SD card’s table of contents and leave the data untouched.
Return to the Recuva program and click “Next” to proceed from the Welcome screen.
Select the type of file(s) you would like the program to recover then click “Next”.
Select your SD Card as the file location. Choose “In a specific location” and then click “Browse”. Scroll through the list and select “Removable Disk”. Select the “DCIM” folder if needed. Click “Ok” followed by “Next”.
Click “Start” to run the program. As the program recovers files, they will appear on the screen.
Check the box beneath each file you would like to recover.
Select a location to save the files and then click “Ok”. The files will be restored to the location you selected.
Click “Ok” once the restoration process is complete.
Navigate to the location you selected in step 14 to view your recovered files.
Please give this a try and let me know how it works for you. If this solves the problem, would you mind taking a moment to rate my service? I'd really appreciate it! Without a rating I am not credited for my answer. If it doesn't recover the files, please let em know as there are a other prgrams that we can try.