How do I fix bad sectors/files (and do I even have them)?

I think I have some bad data sectors, files, or something. Whenever I scroll to a certain date in my picture gallery, the app just crashes to the home screen. I tried connecting to my PC and copying the DCIM folder to my computer, but Windows Explorer crashes. There's some bad voodoo in there somewhere.

Will a factory reset or data wipe essentially format those sectors or files that might be corrupt or do I have to do more? I'm planning on flashing KitKat to my Galaxy Nexus and don't want to still have this garbage to deal with. Thanks!

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