I used a cheap $1 sdhc reader from china and it must have burnt out or the internal board must have bent from being used, shorted from pulling from a running usb port, who knows, it was $1. Anyway, sometimes I found that putting the sdhc into my canon vixia hf100 camcorder formatted it just fine. This time, though, since the camcorder couldn't format it, I thought it was physically toast.
Surely enough, it was just the lower part of the formatting that was jacked up from whatever. The proper tool being the HP format utility, and I was back in business, the header to the drive volume, some extra bits, the volume size or description, I am not totally sure, but it worked!
