Need help. SD card not shown. Wont mount

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http://androidforums.com – posted this on xda and didnt get a ton of help. "well i flashed a kernel and didnt like it so i went into recovery and began flashing my nandroid backup. from there it was all going fine but stopped in the middle and said, oops something went wrong. after that i tried to get back into my sd to see if i had another backup. i then realized that my sd card was unmounted and i tried to mount it but to no avail. this is where i began to freak out because everything was wiped and the backup didnt work and i couldnt boot to anything except the bootloader and recovery. i finally got adb worki (General)