Did I kill my storage card???

[fasttommyv]

I have a SanDisk 16gb storage card and am running juicy 7. Today i was downloading 2 17mb files to the phone at the same time. For some reason the phone locked up, and I soft restarted it. When the phone booted up i opened file explorer, and it basically locked up when i tried to explore the storage card. After like 5 minutes it loaded the files/folder names but any navigation or scrolling would take minutes to do. I hard reset the phone and the same thing happens. File explorer works fine with everything other then the storage card...

So I tried to reformat the storage card, and my computer doesnt even recoginize it and the formatting fails.

So did I somehow kill my storage card? Is there any software windows/ppc that can format the card better then the built in utility in windows?