So I recently decided to try and flash a custom ROM onto my phone. It all worked ok (I had originally flashed Cyanogenmod) but I decided to try out another ROM. so I proceeded to flash the latest Carbon nightly. This however did not go so well; most things were broken and so I decided to go to a previous backup of Cyanogen. This was when I noticed that my SD card was not working correctly. If I plug it into my laptop, I can view the SD card no problem. I have tried to revert to a backup but that didn't work. While I was trying to fix this by myself, in all my stupidity I wiped the SD card, thinking that it might fix it. Needless to say that I was wrong, and now I have lost all my backups but one (the on that I saved to my laptop).
So my question really is, what steps do I need to take in order to fix this. This is my first post so I don't know what information to give you. Please, if I have omitted any important information, tell me in a comment.
EDIT: I just realised that my camera and flashlight also do not work. But this might be a side affect.
Thank you to anyone who can help,